Call of Cthulhu 7e Investigator Builds: Team, Concepts, and Class Guides

Introduction

A strong Call of Cthulhu investigator is rarely a lone expert who can answer every question. What works is a person with a believable life, a useful way into a case, and enough range to help the group survive the moment their ordinary expertise runs out. Build the team together and you get more than skill coverage: you get reasons to trust each other, argue about risk, and keep chasing a truth nobody should face alone.

Both core books recommend creating investigators together with the Keeper so the group can balance occupations and agree on why they cooperate. They also describe an occupation as a starting skill package and a foundation for backstory, with limited effect on play beyond that. This page covers team building first, then character concepts, then complete builds for the private investigator, the academic, and the combat-capable investigator.

Hot Take

The best party role is the one that gives the group a reason to enter a scene they would otherwise avoid.

That means a doctor who can talk to hospital staff, a private investigator who can interview a frightened witness, an academic who can request archive access, or an occultist who knows which collector will recognize an object. A private investigator's real asset is permission to be curious in public. A professor's is knowing which question will change the case. Damage output matters only after someone has found the door, got inside, understood the evidence, and decided what is worth protecting.

Build for access first. A team that can get invited, get records, get a second opinion, and get out when a plan fails will solve more cases than one optimized for a fair fight that rarely comes.

Build the Group Before the Numbers

Before allocating points, have each player answer four questions in a sentence or two:

1. What does this investigator do in ordinary life?
2. Why would they take an impossible event seriously?
3. What kind of problem brings them into contact with the others?
4. What can they contribute when their occupation is not enough?

These questions head off a common problem: a table of individually interesting characters with no reason to cooperate after the opening scene. They also tell the Keeper which cases can plausibly reach the group. A medical professional can receive a disturbing patient. A journalist can chase a suppressed story. A scholar can be asked to identify a document. A former police officer can be hired to find a missing person.

The team does not need to be a formal agency. It can be a circle of friends, colleagues at an institution, a professional partnership, an expedition, a neighborhood network, a club, or people brought together by an earlier case. Choose a premise that creates both access and obligation.

Pick one shared tie for the group and one individual tie between each pair of investigators. The shared tie gets the team into the campaign. The individual ties give scenes texture when a witness asks who can be trusted or a hard choice threatens one member more than the others.

The Five Jobs an Investigation Needs

Most cases need the same kinds of contribution, but no single investigator has to own any of them. Think in jobs, not classes.

At character creation, ask each player to choose a primary job and a secondary job. The secondary job matters more than it looks. It keeps the team working when a specialist is absent, compromised, injured, or out of their depth.

An academic might primarily interpret evidence and secondarily find it through archives. A private investigator may primarily find people and secondarily get access to them through interviews. A doctor can interpret physical evidence and protect the team. An occultist can interpret cultural context and open doors to collectors, societies, or spiritualist circles.

This is not a demand for symmetrical builds. A narrow specialist can be excellent if their backstory and personal interests give them a second practical route into play.

Cover Clues Through Overlap

Do not make one character responsible for every clue in a category. A party works better when important conclusions have two or three plausible paths, which is true in scenario design and in group construction alike.

Overlap is not waste. Two people who can talk to witnesses approach a scene differently: one uses professional authority, the other uses empathy. Two people who can research a symbol can split sources or catch each other's assumptions. A group with one sole expert often stalls when that character fails a roll or cannot safely enter a scene.

The Best Skills Guide covers broadly useful skill choices, and the Complete Skills List helps turn a campaign idea into specific coverage.

Social Access Is a Core Resource

In Call of Cthulhu, people and institutions hold most of the evidence. Records sit in archives, hospitals, police offices, newspapers, businesses, private homes, churches, clubs, and collections. A team needs ways to ask, persuade, trade favors, lie convincingly when necessary, and come back after the first answer is "no."

Social access comes from more than interpersonal skills. It also comes from occupation, status, reputation, class, language, background, and credible procedure. A doctor can request medical information. A researcher can ask to see a collection. A reporter can request comment. A local resident can ask a neighbor what an outsider cannot. A private investigator can offer discretion the police cannot.

Give every investigator one social route, even a reserved one. A quiet scientist may have a respected mentor. A sailor may know dockworkers. A veteran may know an old unit. A wealthy dilettante may have invitations, staff, or a family name. These routes let players act on their own without everyone maxing the same social skill.

Social access also has consequences. A professional who abuses trust may lose future access. A character who lies to a grieving family may gain a clue but damage the team premise. Decide early what each investigator can risk, what they cannot afford to lose, and who might help once the case turns dangerous.

Build for Survival Without Becoming a Combat Party

Combat ability supports investigation; it is not the default goal. Investigators survive because they recognize danger, prepare exits, stabilize injuries, avoid being isolated, and know when to flee, far more often than because they win a long fight.

Every investigator should have one answer to each practical question:

One or two group members may have strong fighting skills or carry weapons suited to the setting. That can protect a retreat, deter ordinary threats, or support a rescue. It does not make Mythos danger fair or replace a plan. The combat investigator build below covers this role in depth, and the When to Fight or Flee Guide is the follow-up when a case turns physical.

Choose Occupations for Campaign Fit

An occupation is a starting skill framework and a promise about the kind of access a character brings. Choose one that belongs in the setting and gives the Keeper hooks. A good occupation has an ordinary routine, a network of people, a source of pressure, and a credible reason to notice a strange case. The rulebooks flag Antiquarian, Author, Dilettante, Doctor of Medicine, Journalist, Police Detective, and Professor as the classic Lovecraftian choices, but any occupation that fits the campaign works.

The Occupations Guide ranks and compares occupations in detail. Use the Occupation Skill Points Guide for the allocation math.

Start With a Team Premise

After occupations are chosen, give the group a first-case procedure: a short answer to "When something strange happens, why do we hear about it and why do we respond?"

Examples include a university department that receives donated materials, a doctor and investigator who share referrals, a newspaper that assigns unusual local stories, a private club whose members owe each other help, or survivors who agreed to compare notes after an earlier event. Keep it modest. A group that claims to be the world's secret defense agency has fewer believable reasons to worry about rent, public disbelief, and ordinary consequences.

Define three team assets and three pressures:

These facts let the Keeper write hooks that fit the group and let players propose practical plans instead of waiting for a stranger to hand them a case.

Investigator Character Concepts

A concept is more than an occupation plus a tragic secret. It is a person with a practical reason to enter the first scene and an emotional reason not to leave the second. Build the character around the choice they make when the sensible thing is to walk away.

What Makes a Good Investigator Concept

Call of Cthulhu investigators are ordinary people pushed into extraordinary knowledge, and the best concepts make that contrast clear. Start with the life that existed before the first unnatural clue: work, obligations, relationships, habits, money trouble, and values. Then add one pressure that makes curiosity, duty, fear, or loyalty stronger than self-preservation.

You do not need a grand destiny. Starting as the secretly chosen expert on cosmic horror drains tension from the game. Begin with a professional, family, or moral reason to care, and let the character become unusual through play.

The rules support this. An occupation sets a professional skill cluster and a place in the world, while personal interest points (INT x 2) represent experience outside the job. The backstory gives those choices emotional weight.

Build a Concept in Five Decisions

Work through these before choosing exact numbers.

1. Choose the ordinary life. Write one sentence about the investigator's normal week: "I repair equipment at the city power station." "I interview witnesses for a small newspaper." "I manage my late aunt's failing boarding house." Ordinary life tells you what the character notices, who knows them, and what they could lose.
2. Choose one useful competence. Research, medicine, mechanics, reading people, navigation, photography, law, or something narrower that suits the campaign. Do not try to cover every task. A clear angle makes a concept memorable.
3. Add a current pressure. Pressure is not automatically trauma. It can be a promotion, a promise, a debt, a public mistake, a family expectation, a professional rivalry, a difficult patient, or a project that must succeed. It should create choices even in a mundane scene.
4. Name a connection. Make it specific. "My sister" is a note. "My sister Ada, who paid for my education and expects me home for supper every Sunday" is a connection the player can roleplay and the Keeper can involve with care.
5. State the threshold. Finish the sentence "I will keep investigating because..." Curiosity alone is a start but needs a direction. "...because I cannot let another family receive the same false explanation my father did" can carry a campaign.

20 Call of Cthulhu Character Concepts

Each prompt is deliberately incomplete. Adjust the details to the era, setting, and group; the occupations implied are directions, not required packages.

1. The obituary writer who recognizes a name. You write death notices for a city paper and know which families hide grief behind formal language. Angle: records, local gossip, interviews, and an eye for contradictions in public stories. Pressure: your editor thinks the pattern of deaths you see is a waste of time. Connection: the typesetter who taught you the trade and insists names be remembered correctly. Why you stay: the latest death is described exactly like that of someone who vanished from the record years ago.

2. The country doctor with an unexplained recovery. You run a small practice where every patient is also a neighbor. Angle: care, observation, medical records, and the trust of families in crisis. Pressure: a patient recovered from something that should have killed them, and the family wants silence. Connection: the clinic your mentor built with you before retiring. Why you stay: the same impossible symptom appears in a new patient far from the first.

3. The disgraced surveyor. You map land, inspect boundaries, and understand the physical logic of a place. Angle: navigation, measurement, terrain, infrastructure, and spotting a map that cannot be right. Pressure: a recent public error cost a client money, fairly or not. Connection: a battered field compass from a parent who taught you never to fake a measurement. Why you stay: a new survey shows a structure where the ground should be empty.

4. The librarian who keeps the unwanted donations. You catalogue other people's papers and decide what is kept, discarded, or locked away. Angle: research, languages, archival practice, and institutional memory. Pressure: a trustee wants to clear out a collection you believe matters. Connection: the reading room where you found a purpose after a loss. Why you stay: a donated box holds a letter addressed to you in handwriting from decades before your birth.

5. The mechanic who knows the building is lying. You repair the equipment that lets respectable people pretend their city runs by itself. Angle: mechanical reasoning, access to service spaces, tools, and spotting staged accidents. Pressure: keeping a small shop open after a partner retired. Connection: your apprentice, who copies your bad habits and expects you to know everything. Why you stay: a machine is running with no possible power source, and someone was hurt near it.

6. The lawyer for people no one believes. You take cases other firms find too small, strange, or embarrassing. Angle: documents, argument, institutions, and asking hard questions without apology. Pressure: a prestigious former colleague says your current client will ruin you. Connection: an earlier client who taught you that respectability can hide cruelty. Why you stay: your client is accused of an impossible crime, and the evidence has been arranged too carefully to ignore.

7. The photographer with one missing frame. You shoot weddings, accidents, civic events, and the details people forget. Angle: observation, visual evidence, darkroom chemistry or equipment, and access to public gatherings. Pressure: a valuable roll of film vanished after a job, and you are blamed. Connection: a sibling who thinks photography is the only honest work you have done. Why you stay: one print shows an extra figure the negative does not.

8. The railway clerk who reads every departure. You handle tickets, freight, luggage, complaints, and people in a hurry. Angle: timetables, bureaucracy, travel patterns, and noticing who is where they should not be. Pressure: passed over for promotion again, with a supervisor now checking your work. Connection: a regular passenger who always brought news from home. Why you stay: that passenger's name appears in the register after their confirmed death.

9. The clergy member who has lost the easy answer. You serve a congregation and hear the problems people will not say aloud. Angle: trust, counseling, community knowledge, history, and moral authority in the right setting. Pressure: a recent tragedy shook a belief you once held firmly. Connection: the person who first taught you what service meant. Why you stay: a frightened parishioner needs help with something prayer alone does not explain.

10. The veteran who refuses another cover-up. You keep a quiet trade and try not to be defined by an old war. Angle: discipline, field survival, comradeship, equipment, and practical caution. Pressure: an old comrade's letters no longer sound like them. Connection: a unit photograph with people you could not bring home. Why you stay: the letters mention a place you both swore never to discuss.

11. The traveling salesperson who knows small towns. You move between towns, remember faces, and know how fast a rumor becomes local truth. Angle: travel, rapport, negotiation, and a wide net of casual contacts. Pressure: your employer wants impossible sales figures and questions every expense. Connection: the boarding house owner who always finds you a room. Why you stay: three towns on your route have stopped saying the same street name after dark.

12. The dilettante with a debt of honor. You have money, education, and social access, and you have spent years trying to prove you are more than that. Angle: invitations, social observation, travel, collections, and paying for ordinary obstacles to go away. Pressure: family duty makes you protect a reputation you no longer respect. Connection: a childhood friend who treated you as an equal first. Why you stay: that friend asks you to investigate something your family would pay to bury.

13. The immigrant community organizer. You help neighbors deal with work, housing, language, and officials who do not listen. Angle: community trust, persuasion, local history, languages, and networks outside formal power. Pressure: a planned closure will uproot people with nowhere secure to go. Connection: the cafe or mutual-aid hall where you first felt at home. Why you stay: several families report the same impossible visitor, and no authority will listen.

14. The stage manager who hears what the audience misses. You run a show from the wings: personalities, timing, props, and breakdowns. Angle: observation, logistics, theater contacts, an eye for disguise, and calm in chaos. Pressure: a producer blames you for accidents that began when a new script arrived. Connection: an aging performer who taught you the craft and now will not go near the theater. Why you stay: the missing actor's final cue keeps sounding during performances after midnight.

15. The park ranger who protects a boundary. You patrol land that visitors think is empty and locals know is not. Angle: tracking, survival, natural knowledge, local relationships, and reading terrain. Pressure: funding cuts left you alone in country that needs more than one person. Connection: a cabin or stretch of land promised to someone you care about. Why you stay: animals now avoid a valley that never frightened them before.

16. The forensic accountant with a missing ledger. You follow money through businesses that would rather nobody asked. Angle: accounts, documents, institutions, patient research, and spotting financial pressure. Pressure: a former client says you missed a discrepancy that could ruin your name. Connection: a parent who taught you that keeping promises beats keeping appearances. Why you stay: the missing funds turn up in accounts of people who should have no connection.

17. The amateur radio operator who hears a familiar voice. You build, repair, and listen to sets as a serious hobby. Angle: technical knowledge, patience, signal logs, and a network of enthusiasts. Pressure: your household thinks the hobby is becoming an expensive obsession. Connection: the person who helped build your first set and still checks in every week. Why you stay: their call sign arrives on a frequency no transmitter should reach.

18. The social worker who will not file the case away. You help people who need help faster than institutions give it. Angle: empathy, interviews, public systems, community contacts, and persistence. Pressure: a supervisor says you are too invested in a difficult family. Connection: a former client whose recovery reminds you why the work matters. Why you stay: the family at the center of the new case vanishes after reporting something no form can describe.

19. The archaeological illustrator with a corrective eye. You draw artifacts, structures, and sites accurately enough for scholars to rely on. Angle: art, history, observation, fieldwork, and spotting a false reconstruction. Pressure: a celebrated researcher takes credit for your work and expects silence. Connection: a sketchbook from a relative who taught you to see what is really there. Why you stay: a new excavation holds an image you have drawn before but never seen.

20. The boarding house keeper who knows everyone's story. You manage rooms, meals, repairs, and the fragile privacy of people who cannot afford better. Angle: gossip, practical repair, observation, hospitality, and a steady flow of contacts. Pressure: the landlord threatens to sell, and the tenants have nowhere as safe to go. Connection: the first tenant you took in after they ran out of options. Why you stay: a room empty for years starts receiving letters addressed to people who never lived there.

Make the Concept Fit the Campaign

Ask the Keeper for the era, location, campaign frame, and likely kind of trouble before finalizing. The same prompt can become a 1920s investigator, a modern one, or a historical character with different tools and assumptions. Change the career details and keep the emotional core.

The Investigator's Handbook makes the case directly: connections the player creates between their investigator and the plot are likely to carry more "emotional resonance" than anything the Keeper supplies. Keepers can offer a hook as a question. "Who disappeared?" often works better than "Your sibling disappeared." Let the player choose the relationship, then make it matter.

Turn a Prompt Into a Character Sheet

1. Choose an occupation that supports the ordinary life.
2. Put occupation points into skills that represent actual work, not every possible clue type.
3. Spend personal interest points on the detail that makes this person unusual.
4. Set Credit Rating to match rank, lifestyle, and current pressure.
5. Write three to six short backstory entries and mark one as the key connection. The Keeper cannot destroy or remove a key connection without first giving the player a roll to save it, and losing it costs 1/1D6 Sanity.
6. Add one relationship to another investigator or to the group frame.
7. Check the full sheet with the character sheet guide.

Do not grant yourself resources the sheet does not support. A technically trained character may not own a private laboratory. A well-connected person may not know every official. A veteran may not have command authority. Describe the asset you do have and ask the Keeper what it can reasonably do.

Concepts That Work Together

Pair concepts so one investigator's ordinary world opens a door for another.

You do not need prewritten friendships. A professional favor, an old rivalry, a shared patron, a family link, or a mutual need is enough to make the first conversation plausible and the later loyalty earned.

Avoid These Concept Traps

The Mythos expert on day one. Detailed supernatural knowledge at the start removes discovery from a game about the unknowable. Begin with folklore, skepticism, an unresolved experience, or one narrow piece of evidence. Starting Cthulhu Mythos points need the Keeper's agreement under the core rules.

The character with no reason to cooperate. Aloofness is fun for a scene. A character who refuses every lead, distrusts every ally, and leaves at the first danger turns the game into a negotiation about whether they play at all.

The trauma list. Painful history can be part of a respectful concept, but not the whole personality. Include a routine, a value, a skill, and a source of comfort, so the horror has something human to contrast with.

The secret that replaces the campaign. One secret is enough. An inherited cult plus a missing memory plus a private conspiracy leaves no room for the actual scenario.

The perfect specialist. Every investigator needs a blind spot: a researcher who needs field support, a tough guide who needs help with institutions, a social figure who needs someone to see through a performance. The limit should create choices, not keep the player out of scenes.

Keeper Guidance for Concepts

Ask for concepts early and answer with questions, not assignments. "Which person are you afraid to disappoint?" and "What part of this town do you know better than the others?" produce stronger hooks than a paragraph of hidden setting lore. When a player supplies a name, place, employer, or belief, weave it into an existing scenario element instead of adding an unrelated subplot.

Give every concept a moment where its competence matters, but do not write the scenario around one investigator. Spread evidence and stakes: a doctor understands the symptom, a journalist finds the witness, a mechanic exposes the cause, and a community organizer gets someone to trust the group enough to speak.

When a concept involves sensitive material, discuss boundaries before play. Keep the key connection meaningful, give the player a chance to act when it is threatened, and let the story show how the character changes through their choices.

Featured Investigator Builds

Once you have a concept, pick a build direction based on the access and questions you want to bring. Then add a personal interest that covers a gap you expect in the campaign.

The goal is not the mathematically strongest option. It is a team where each investigator has a reason to be present and a reason not to face every problem alone.

Private Investigator Build

The private investigator is one of the most natural campaign roles in the game. They have a reason to ask questions, follow people, search places, photograph evidence, and take jobs respectable people want kept quiet. They also have limits: no official authority, a modest income, and a license or reputation that one bad decision can end.

Build the investigator around a method of inquiry, not a lone-genius fantasy. Their surveillance, interviews, research, and access are worth most when they feed evidence to the whole group.

What the Private Investigator Does

The Investigator's Handbook describes the private eye as working "non-police situations": gathering evidence for clients in civil cases, tracking down fleeing spouses or business partners, and acting for defense attorneys. A police past is possible but not required. In most places the PI must be licensed, and proof of illegal activity can cost that license and end the career.

That work produces hooks on its own:

• A client insists their missing relative joined a harmless religious group.
• A business partner vanished after finding irregular accounts at a shipping firm.
• An attorney needs evidence before a witness disappears or recants.
• A wealthy family wants a scandal handled quietly.
• A routine surveillance job shows an impossible pattern instead of an ordinary affair.

A PI does not command patrol officers, open evidence rooms, or make arrests. That limit is part of the appeal. The investigator can take unofficial routes, but every trespass, threat, false pretext, or public mistake puts the license, income, and contacts at risk.

Private Investigator Occupation Rules

Take DEX for an agile, quick-handed investigator; take STR for one who works through physical presence, long hours on foot, or intimidating people just by filling the doorway. The choice sets where the professional training comes from, not the whole character.

Spend occupation points on professional competence first. The investigator should be able to notice details, read people, research records, and get access through at least one social method. Use personal interest points for survival, travel, combat, technical, or hobby gaps. The Skill Points Guide covers the allocation process.

Choose an Investigative Approach

Pick a primary approach before assigning numbers. The occupation skills do not change, but their emphasis and the open skill do.

Stealth and Listen are not occupation skills here, so the watcher buys them with personal interest points. These are lenses, not limits: a watcher can be charming and a former officer can be a fine researcher. The point is to know what the investigator does first when a new lead appears.

Private Investigator Core Skills

Art/Craft (Photography). Evidence, memory, and a reason to linger. A photograph documents a room before it changes, preserves a detail for comparison, supports a professional cover, and gives the group something to show a contact. It may reveal a detail; working out what it means is still investigation.

Disguise. Supports access, surveillance, and avoiding recognition. It is not an identity swap. Good uses are practical: a different coat and posture for watching a doorway, a workman's look for a service entrance, enough change that a nervous witness does not recognize yesterday's visitor. Every disguise needs an answer to where you belong, why you are there, and what happens under a detailed question, so pair it with a social skill and a concrete pretext.

Law, Library Use, and Psychology. Law covers procedure, paperwork, claims, and the pressure legal institutions can apply; it is no substitute for official authority, and its scope depends on era and jurisdiction. Library Use finds records, newspapers, archives, and directories; the rules note each use represents several hours of searching. Psychology reads motive and character without becoming mind reading, and the Keeper may roll it in secret. Together they turn a suspicion into a case theory: Law says where a record or weak procedure might be, Library Use finds it, and Psychology tells you whether the person holding it is frightened, lying, or shielding someone.

Spot Hidden. Field work is full of physical detail: a recently moved object, a second entrance, a distinctive shoe mark, the person watching from across the street. Make it reliable, but still describe the search. "I check the sill for forced entry and whether anyone in the alley could see this window" gives the Keeper far more than "I roll Spot Hidden."

Social Skill and Open Skill

The interpersonal skill decides how the investigator opens a closed conversation.

Do not take Intimidate just because it sounds decisive. It changes the temperature of every scene. Charm and Persuade make allies, Fast Talk makes openings, and Intimidate gets compliance that can poison future access.

The open skill is where the PI stops being generic. Locksmith is the classic quiet-entry pick and raises trespass questions. Firearms suits a former officer, veteran, or security operative, and raises questions about escalation and legality. Drive Auto supports tails, travel, and escapes in a city campaign without a reliable driver. Forensics makes the investigator evidence-driven. History suits old cases, family claims, and institutions. Mechanical Repair keeps vehicles and equipment running. A higher Credit Rating changes who takes the investigator seriously; the core rules allow investing extra points beyond the occupation range with the Keeper's agreement. Pick a specialty that brings a cost as well as an advantage, because the cost gives the Keeper hooks.

PI Personal Interests, Contacts, and Cover

Personal interest points (INT x 2) should answer "What happens after I find the clue?"

• First Aid: keep yourself or a companion moving after violence or an accident.
• Drive Auto: follow leads, escape danger, and work independently.
• Listen: support surveillance and avoid relying only on visual clues.
• Stealth: watch people and enter risky places without starting a fight.
• Fighting (Brawl) or a Firearms specialization: a last-resort defense with a reason in the background.
• Credit Rating: better access and living standard when the concept supports it.
• A setting skill: Other Language, Navigate, a Science, or a craft from the investigator's earlier life.

Do not sink every point into combat. The occupation already opens investigations; a little medical, travel, stealth, or technical skill keeps the PI useful once the case leaves the office.

Credit Rating 9-30 describes a lean independent operator, a steady professional with a modest office, or a former officer with a small practice. The top of the range is a more comfortable, credible position, not wealth; the business still depends on clients and reputation.

Build two or three contacts before play: local business owners, residents, journalists, legal clerks, police acquaintances, repair shops, former clients. Give each a reason to help and a reason to hesitate. The helpful bartender fears the local racketeer. The former partner resents your departure. The clerk wants a favor back.

Keep cover stories narrow. "I am checking an insurance claim" beats an elaborate false identity with nothing behind it. When the investigator lies, know what they want, what the target can verify, and what happens if the story breaks.

PI Case Flow and Pitfalls

The PI is excellent at the first practical step: interviewing a client, searching a location, researching a name, following a suspect, identifying who to talk to next. That does not mean taking every roll. An academic may read the symbol in the photograph, a doctor may interpret the body, a criminal contact may get the team into a neighborhood, and a dilettante may make a respectable introduction. The PI often connects those contributions and keeps the lead moving.

1. Set a focused question and the client or lead that created it.
2. Use interviews, records, surveillance, and physical search to open several routes.
3. Bring specialist evidence to the group instead of solving it alone.
4. Decide between lawful access, a cover, or a risky shortcut.
5. Treat the consequences as part of the case, not a reason to retreat to the office.

The police officer with no limits. A PI can know procedure and keep contacts but gets no warrants, arrests, or evidence-room access. Give the character a reason to work outside official channels.

The lone hero. The occupation covers leads well but cannot replace medical, academic, technical, and social specialists. Share the evidence.

The armed solution. A gun brings police attention, injured allies, lost evidence, and worse. Carrying one should change how the investigator reads a scene.

The generic noir costume. A trench coat is not a background. Decide what cases they used to take, why the work matters, whom they owe, and which routine job first exposed them to the Mythos.

Academic Build

The academic is not the party's lore vending machine. The Professor is strongest when turning scattered evidence into useful questions, getting into institutions and collections, recognizing when a familiar explanation has failed, and helping the group act before the answer becomes a disaster. The same approach works for lecturers, independent scholars, researchers, curators, and technically trained academics.

Anyone can read a strange inscription aloud. A good scholar asks whether the wording is a translation, a ritual instruction, a legal formula, a map reference, or a forgery, and that question gives the group a direction. Build for interpretation, access, and follow-through: the first two make the Professor indispensable, and the third keeps them alive after the archive closes.

What the Academic Does

The Handbook describes professors as academics employed by colleges and universities, with larger corporations also hiring them for research and independent scholars teaching part time. The occupation usually implies a Ph.D. and a discernible reputation in a field. An academic can teach, publish, consult, curate, run an expedition, or pursue private research.

That role creates access:

• Library stacks, catalogues, archives, and restricted collections.
• Students, colleagues, librarians, curators, and specialists as contacts.
• Professional credibility when requesting records, specimens, or introductions.
• A plausible reason to travel for a conference, excavation, survey, lecture, or research visit.
• Equipment, workspace, and institutional resources the group cannot easily afford.

It also creates pressure. A department chair watches the investigator's conduct. A collection is restricted. A rival disputes a conclusion. A grant, appointment, reputation, or student becomes a pressure point for someone who wants the inquiry stopped. Make those obligations part of the character.

Professor Occupation Rules

The Professor draws occupation points entirely from EDU, so a high Education score matters more here than for most occupations; the rules peg EDU 90 at "Doctorate, professor." Physical ability does not feed the skill pool at all, which is why personal interest points carry the field skills.

Credit Rating 20-70 covers a poorly paid junior lecturer, a comfortable tenured professor, or a respected scholar whose status is professional rather than aristocratic. Set the value to match the background, then let the campaign decide what access and pressure follow.

Choose a Scholarly Identity

"Professor" is an occupation, not a subject. Start with a discipline and the reason the character chose it.

A historian of maritime trade, a botanist studying regional fungi, and a professor of comparative religion all use academic skills, but they ask different questions and bring different contacts. The Fields of Study Guide helps turn a broad subject into a specialty with both rules scope and story weight.

Core Academic Skills

Library Use. The academic's main tool for turning a lead into a trail through catalogues, archives, newspapers, collections, and reference works. It works best with a defined question. Instead of "I search the library," ask "Who owned this building before the family?" or "What newspapers covered the earlier disappearance?" A focused question tells the Keeper what a success reveals and stops research from becoming an endless hunt for plot.

Other Language and Own Language. Other Language opens communities, scholarly traditions, correspondence, and source collections, not only ancient documents. Own Language supports precise reading, writing, and scholarship. Knowing a language does not grant knowledge of the subject: a translated scientific report may still need a Science specialty, a contract may need Law, and a ritual text may be readable yet misleading, incomplete, or dangerous.

Psychology. Keeps the Professor from being purely document-bound. It helps read fear, stress, evasion, and motive in interviews, committee meetings, and encounters with people touched by the case. The librarian who denies having a book may be afraid rather than obstructive; the student who brought the artifact may be hiding guilt rather than lying about its origin. That distinction changes the group's approach.

Four Specialty Packages

The four open skills are the build's real shape. Do not spend them on four unrelated facts. Choose a package that handles a recurring kind of evidence and still works when the case leaves campus.

The historical investigator. History, Archaeology, Anthropology, and a relevant Other Language or Art/Craft. Excellent for old estates, museum collections, ruins, family secrets, cult ancestry, and expeditions. Needs a teammate for medical, technical, or physical fallout.

The scientific investigator. Two connected Science specialties, Mathematics or Engineering, and a practical skill such as Forensics, Electrical Repair, or Mechanical Repair. Pick fields that overlap without duplicating: Biology and Chemistry for organic evidence, Astronomy and Mathematics for celestial patterns, Geology and Engineering for dangerous sites.

The human-systems investigator. Anthropology, History, Persuade or Charm, and Law, Psychoanalysis, or another social specialty. This scholar studies institutions, communities, religious movements, families, and public stories. They may never pick a lock, but they can explain why a group behaves as it does and where pressure will break it.

The expedition scholar. Archaeology or a field Science, Navigate, Natural World or Survival, and First Aid or Drive Auto. Trades some research depth for a character who can reach, examine, and leave a remote site. Strong when a campaign starts at a university and quickly moves beyond it.

The curator and object specialist. Art/Craft, Appraise, History, and a field that explains material construction or cultural origin. This character reads objects: provenance, restoration, handling, forgery, collection history, and the difference between valuable and dangerous.

Academic Language Choices

Pick Other Language from biography and campaign hooks: family, travel, military service, fieldwork, a research focus, a diaspora community, or a foreign colleague. The choice should make it easy for the Keeper to bring in documents, contacts, and institutions that matter to the character.

A language is not a universal ancient-text key. The group may still need a different language, a dictionary, an expert, or time with a hard manuscript, which turns translation into investigation instead of a single gate. Ask before play whether the campaign has a likely region, period, or document tradition. If so, choose a language tied to it. If not, choose one that strengthens the character's history rather than guessing what will be optimal.

Academic Personal Interests

Personal interest points (INT x 2) matter a great deal here, since the occupation pool contains no physical skills at all. The occupation makes the Professor good at understanding evidence; personal interests make them capable when the evidence is wet, far away, dangerous, or held by someone who will not cooperate.

• Spot Hidden or Listen: notice details and danger before research becomes a trap.
• First Aid: keep yourself or a companion moving when help is far away.
• Drive Auto or Navigate: travel independently and contribute off campus.
• Stealth: watch an institution, collection, or suspect without announcing interest.
• A social skill: turn institutional authority into cooperation instead of relying on credentials.
• Fighting (Brawl) or a Firearms specialization: a plausible last resort, not the build's purpose.
• Credit Rating: reinforce access and living standard when it matches the character's position.

Spend enough on the core discipline that it feels like a career, then use the rest on the campaign's practical demands. A scholar who cannot drive, climb, treat an injury, or spot a tail can still be compelling, as long as the group knows that before the expedition.

Research Workflow at the Table

Academic play is strongest when research produces action. Use this sequence so a successful Library Use roll is not the end of the scene:

1. State the question the investigator is pursuing.
2. Identify the source, institution, person, or object likely to answer it.
3. Use the relevant skill to gain a fact, contradiction, location, or name.
4. Share the finding and ask the group what it changes.
5. Choose a next action that tests, follows, or protects the new lead.

An archaeologist learns that a symbol predates the estate. Now the group can search the earlier site, question the family about the land purchase, inspect the collection, or identify the period's language. Research has created options.

When a source is dangerous, state the goal and risk before rolling. The Keeper Rulebook's sample pushes for Library Use are pressing the librarian for extensive help or working through the stacks more slowly, and its sample failures include finding a similar book with misleading information or alerting an adversary to your research. It also notes that finding a locked rare-book collection is not the same as getting into it, which may take Persuade, Credit Rating, or credentials. The Push the Roll Guide covers this. Push when the group understands the cost, not because a book is interesting.

Academic Field Safety and Pitfalls

An academic gives the group context and direction but should not be the only voice when a clue appears. Invite others to act on the research: a private investigator follows the name, a doctor examines the result, a driver reaches the site, a social character gets the group inside. Decide who carries equipment, who handles travel, who keeps watch during a search, and who calls it when a site becomes unsafe.

Make institutional contacts specific. The librarian grants access but fears a supervisor. A former student has field skills and resents the professor. A museum curator wants credit for the discovery. These people turn academic privilege into relationships that help, complicate, or endanger the case.

The all-knowing encyclopedia. No rating makes the academic right about every culture, science, or supernatural event. Specialties and evidence still matter.

The campus-bound scholar. A Professor needs a reason to leave the office, a way to travel, and a plan for when the case gets physical.

The forbidden-knowledge optimizer. Cthulhu Mythos is not an ordinary academic specialty. The rules bar starting points in it unless the Keeper agrees, and maximum Sanity can never exceed 99 minus the Cthulhu Mythos skill. See the Cthulhu Mythos Skill Guide.

The single-roll solution. A successful research roll should produce a lead or insight, not remove the need for investigation, risk, or other investigators.

Combat Investigator Build

A combat-capable investigator matters because danger sometimes has to be delayed, escaped, or survived, not because every mystery ends in a fight. Build the character around judgment under pressure: seeing when violence is unavoidable, getting allies to safety, holding off an ordinary human threat long enough to protect someone, and knowing when a weapon is the wrong answer.

The core rules treat Fighting and Firearms as skills raised through a suitable occupation or personal interests, and note that apart from a few occupations like Soldier, those points normally come from personal interest points. The best combat investigator makes combat shorter, rarer, and less catastrophic: spotting an ambush route before it closes, getting a witness out the back, carrying the right first-aid supplies, driving the escape car, or using credible authority to stop a confrontation before anyone draws. A character who contributes only after the plan fails is not a complete investigator.

A Combat Build Is a Survival Build

Change the question from "How do I win fights?" to "What does this investigator do when the case becomes physically unsafe?" The answer should cover prevention, response, and aftermath.

Physical conflict is risky, firearms change a scene fast, and a serious wound can take an investigator out of the case. The job is not to prove bravery by standing still. It is to give the team options when the safe plan collapses. The Combat and Chases Guide holds the actual procedures; use this section to decide what kind of investigator you want.

Choose a Credible Reason for Training

Training should come from the investigator's life, not an assumption that every horror protagonist is secretly a soldier. A believable source gives the Keeper contacts, obligations, legal limits, old habits, and people who remember who the character used to be.

Fit the background to the era and setting. A veteran has an old service contact. A security worker knows which private clubs are careless about visitors. A boxer's trainer sees people after hours. A guide knows the terrain well enough to see when a map is lying. These connections matter as much as a skill rating.

Skip the implausible list of elite credentials. One strong background plus one personal interest is enough. A former patrol officer who took up amateur photography, or an expedition guide who studies regional folklore, plays better than a history that exists only to explain equipment.

Build Around an Investigation Job

Treat combat ability as a secondary focus. Choose an investigation job from the five jobs first, then pick physical skills that make that job safer.

Check what the group already has before committing points. If another player is the primary medic, focus on field mobility. If the team has strong researchers but nobody can get them through a remote site, build travel and practical support. Do not duplicate a role just because "fighter" feels clear.

Pick One Primary Physical Method

Choose one main way the investigator handles immediate danger. That keeps the character focused and leaves room for the skills that matter before and after a confrontation.

A secondary method should serve the first. A field guide may handle a rifle because it fits an expedition, but the real contribution is getting the group through a storm and noticing a disturbed campsite. A detective may know a handgun, but the key work is deciding whether a scene needs police, discretion, or evacuation.

Do not spread points across every Fighting and Firearms specialization. When an occupation lists Fighting or Firearms without a specialization, the player picks which ones apply, so pick the ones the investigator actually practices and put the rest into support skills.

Support Skills That Keep You Alive

The best physical builds are defined by their support skills.

Take First Aid unless someone else reliably covers it. It starts at 30%, only First Aid can save a dying character, and it has to be applied within an hour to restore a hit point, so the person nearest the injury needs it. Then add observation and one mobility route. A weapon skill with no way to spot danger, reach an ally, or leave is a narrow answer to a broad problem.

Equipment as a Plan

Equipment should serve a task. A flashlight supports searching and signaling. A medical kit supports treatment. A camera supports documentation. A vehicle supports surveillance and extraction. A weapon, where lawful and fitting for the character and setting, supports a defensive decision that has consequences.

Before a dangerous scene, answer five questions:

1. What is the goal besides "go inside"?
2. Who watches the exit and who carries the evidence?
3. What signal means the group leaves immediately?
4. Where do you regroup if separated?
5. Who can treat an injury or call for help afterward?

The plan matters more than carrying everything. Too much gear means noise, legal trouble, suspicion, and false confidence. Carry what the background explains and the case requires, and make sure the group knows why each item is there. For era-specific kit, rely on the campaign's sourcebooks and the Keeper.

Combat Investigator Team Roles

The combat investigator should not make every dangerous decision. Their job is to make other plans possible: asking the academic which document matters, the doctor which patient can travel, the occultist which sign cannot be ignored, and the PI which witness must be protected.

This keeps the player engaged without taking over, and it stops the group from treating physical skill as permission to ignore the consequences of trespassing, carrying weapons, threatening a witness, or escalating a public conflict.

Plan for Wounds and Retreat

Serious harm has lasting consequences. A major wound can limit what the team can do for days or longer, and a character can be treated with First Aid and Medicine only once each until they take further damage. The details are in the Major Wounds Guide and Damage, Armor, and Hit Points Guide.

At creation, write down three retreat answers:

• Immediate exit: the nearest route away from a fight, collapse, or discovery.
• Safe destination: a hospital, trusted home, station, hotel, vehicle, or public place to regroup.
• Follow-up support: a doctor, friend, institution, or resource that helps after the crisis.

Then set a boundary. The investigator will not fire into a crowd, will not leave an injured civilian, will not return to a site alone, or will not let a desperate client carry a weapon. A boundary tells the table how this character decides when fear makes every option look simple. The Firearms Guide and Chase Rules Guide cover the next rules steps.

Combat Investigator Concepts

Each starts with a credible civilian or professional role and adds a physical secondary focus.

These work with many occupations. The concept process above turns any of them into a full investigator with a reason to stay in the campaign.

Combat Build Failures

Building a weapon before a person. Start with a job, background, contacts, and the problem the character notices. A firearm skill alone does not create a scene.

Trying to cover every weapon. A pile of specializations leaves too little for medical help, observation, travel, and access.

Assuming violence is private. Shots, injuries, threats, property damage, and bodies bring witnesses, police, retaliation, and public fallout. Plan how the group explains, escapes, or lives with it.

Treating First Aid as someone else's job. The physical specialist is often nearest the injury when a plan fails, even in a group with a doctor.

Confusing courage with staying. A retreat can protect evidence, civilians, the future investigation, and the group. The build should make leaving possible.

Forgetting the investigation after the fight. The group still has to identify the victim, preserve the clue, understand the place, and decide what it means.

Combat Investigator Worksheet

Ordinary occupation and credible training source:
Primary investigation job:
Secondary physical role:
One primary physical method:

Observation skill or habit:
First Aid or medical support:
Travel, field, or escape capability:
Social authority or de-escalation route:
Useful contact:

Likely case entry point:
Equipment justified by the character and case:
Immediate exit:
Safe destination:
Follow-up support:
Personal boundary under pressure:
How this build complements the rest of the team:

Build a Four-Investigator Team

For a typical group of four, start with a simple spread of jobs. Adjust names and occupations to the campaign; this is not a required party.

Then check three things. Can at least two people pursue a social lead? Can at least two make progress on a documentary or physical one? Can the team get an injured person out of a dangerous place? If any answer is no, add personal interest skills, contacts, or a shared NPC instead of scrapping a concept the player likes.

For two or three players, give each character a stronger secondary job and put useful contacts into the team premise. For five or more, do not add redundant specialists to fill a chart. Give extra characters campaign-specific access: transport, law, local history, religion, criminal networks, performance, engineering, or a particular field of study.

Common Team-Building Failures

Everyone is a lone expert. A table of scholars can work if they have different specialties, contacts, and reasons to leave the library. Add field skills, social routes, and personal stakes rather than changing every occupation.

One player owns every essential clue. Do not make one character the sole researcher, medic, face, or driver. Build overlap and let players take different routes to the same job.

Combat is the party's shared identity. A weapon-focused group may have a setting reason, but it still needs research, access, escape, and recovery plans. Fighting better does not solve a case whose core problem is hidden information.

The team has no reason to stay together. "We met in a tavern" is not enough for a campaign about secrecy and risk. Give the group a shared place, contact, obligation, prior case, or practical service.

Backstories never create play. A tragic past is useful only when it produces a person, place, object, debt, or question the Keeper can bring into a case. Turn one line of history into a current connection.

Investigator Build Worksheet

Team premise:
Shared place, contact, or organization:
Why the group responds to strange cases:

Investigator name and ordinary occupation:
Occupation skill point formula and Credit Rating range:
Primary job: Find / Interpret / Access / Protect / Act
Secondary job:
Ordinary life, pressure, connection, and threshold:
Key connection:
One social route:
One survival answer:
One personal stake or boundary:

Primary clue coverage:
Overlap coverage:
Who can help if this investigator is absent or compromised:
Campaign-specific access or contact:

Investigator Builds Checklist

For the team

• Build investigators together around a shared team premise.
• Give each character a primary and secondary investigation job.
• Cover finding, interpreting, access, protection, and action across the group, with overlap on essential clue types.
• Treat social access and institutional credibility as core resources.
• Plan exits, aid, and field competence before planning combat.

For each investigator

• Start from a concept with an ordinary life, a competence, a pressure, a connection, and a reason to stay.
• Choose an occupation that fits the campaign and check its formula and Credit Rating range in the book.
• Use personal interest points (INT x 2) to cover at least one weakness: injury, travel, stealth, observation, or social access.
• Link the backstory and key connection to a person, place, object, or obligation that can appear in play.
• Name two or three contacts, each with a reason to help and a reason to hesitate.

Build-specific checks

• Private investigator: EDU x 2 + (DEX x 2 or STR x 2), Credit Rating 9-30, a social skill that matches their method, an open skill that explains their field work, and a cover story they can maintain.
• Academic: EDU x 4, Credit Rating 20-70, four specialties that form one coherent package, a language with a personal or campaign tie, and a plan for what a research success makes the group do next.
• Combat investigator: an investigation job chosen before a weapon, one primary physical method, First Aid and observation, three retreat answers, and a boundary under pressure.

An investigator team becomes capable when each person brings a different way to turn uncertainty into a next step. Build the group's shared reason to act first, then make sure every individual can contribute when that reason leads somewhere dangerous.

Where To Go Next

Once the team is built, the Character Creation Guide covers the mechanical steps for turning each concept into a finished sheet, and the Skills Guide ranks which purchases actually cover the jobs this guide asks the team to fill. Every other topic guide in the collection is indexed on the Call of Cthulhu 7e Guide Hub.