Building on fond memories of other random generators, what might a random Trail adventure generator look like? The tables below generate a highly random Trail of Cthulhu mystery. As with all random generators, the goal is to prompt the Keeper’s creativity in connecting disparate elements – don’t expect coherence from random rolls alone!

Adventure Hook (d12)

Why do the investigators get involved? (You can also use this as a way to determine the theme or atmosphere of the adventure if you’re not using pregenerated characters.)

  1. Adventure
  2. Arrogance
  3. Antiquarianism
  4. Artistic Sensitivity
  5. Bad Luck
  6. Curiosity
  7. Duty
  8. In the Blood
  9. Revenge
  10. Scholarship
  11. Sudden Shock
  12. Thirst For Knowledge

(The drives Ennui and Follower aren’t used in the list above.)

Location (d20)

Where does the adventure take place? The somewhat eclectic list of suggestions below is based on the locations discussed in the Trail of Cthulhu rulebook.)

  1. United States – Rural
  2. United States – Small Town
  3. United States – Urban
  4. United States – Lovecraft Country
  5. Abyssinia/ Belgian Congo
  6. Antarctica
  7. Brazil
  8. Burma
  9. Egypt
  10. Germany
  11. Greenland
  12. Haiti
  13. Mongolia
  14. Peru
  15. Rumania
  16. Saudi Arabia
  17. Soviet Union
  18. Easter Island/South Pacific Mandate
  19. Spain
  20. Thibet

Apparent Situation (roll 1d20)

What are the investigators doing here?

  1. Commercial interest – it’s related to the business of an investigator, like a real estate deal
  2. Investigate disappearance – of a friend, relative or other acquaintance. Or a strange, if the investigator is a police officer, detective or other specialist.
  3. Investigate untimely death – as above.
  4. Investigate cryptic events – lights in the sky, strange footprints, sinister letters.
  5. Investigate criminal activity – bootlegging, extortion, theft
  6. Investigate alleged supernatural event – ghosts, seances, vampire attacks, curses.
  7. Investigate medical mystery – strange disease, sudden madness
  8. Investigate prodigy – fallen meteorite, brilliant scientific discovery
  9. Carry out personal errand – execute a will, return a book borrowed years before
  10. Carry out mundane task – something connected to the investigator’s occupation
  11. Carry out official duties – as above, but a little more formal and significant
  12. Survey site – examine a location in detail, for commercial or archaeological reasons
  13. Report on story of interest – even if the investigator isn’t a reporter, they might be asked to look into a local mystery
  14. Research local history – as a hobby, out of antiquarian interest.
  15. Visit distant cousins or aged relative – haven’t seen them in years, I wonder what they’re up to
  16. Visit old friend or correspondent – as per Henry Akeley in Whisperer in Darkness
  17. Vacation or (recuperation after traumatic experience) – just what you need after that last nightmarish encounter
  18. Vehicle breakdown or travel delay – you’re stuck here for a while
  19. Drawn here by strange dreams – because you’re a Lovecraftian protagonist
  20. Seeking mysterious object or book – that has recently come to light

Horrible Truth (roll 1d12)

What’s really going on?

  1. The Apparent Situation is the true situation
  2. There’s a CULT here, and their activities may be exposed by the Apparent Situation
  3. There once was a CULT here; it’s mostly moribund, but some horror connected to the cult lies buried here and may be exposed by the Apparent Situation
  4. There’s an active and ambitious CULT here; the Apparent Situation is connected to some malign intent of theirs.
  5. There’s a CREATURE here, disinterested in humanity unless provoked.
  6. There’s a CREATURE here, preying on humanity.
  7. There’s a CREATURE here, slumbering – but it may be awoken by the Apparent Situation.
  8. The Apparent Situation was triggered by a TOME OR ARTEFACT
  9. Someone’s using the Mythos for personal gain using a TOME OR ARTEFACT
  10. There’s a GOD OR TITAN slumbering here, and its presence disturbs the world
  11. There’s an ancient ruin or tomb connected to a GOD OR TITAN here, guarded by a (1-3: CULT, 4-6: CREATURE)
  12. There’s a clash between two entities (roll 1d6 for each: 1-3: CULT, 4-5 CREATURE, 6 GOD OR TITAN).

Cult

Roll on the the Cult Size, Cult Status, Cult Intent and Blasphemous Rites tables.

Cult Size (roll d6)

  1. A single sorcerer
  2. A small cabal (a single family, a few locals)
  3. A congregation (two dozen or so)
  4. Endemic in the area (lots of people in the area are involved)
  5. Far-flung (only a small cabal here, but the cult is spread across the world)
  6. Great conspiracy (cult is world-wide and exceedingly well connected)

Cult Status (roll 1d6)

  1. Dead – no cultists left, only their works
  2. In decline – only a few left
  3. Secret – cult is hidden and mostly inactive, only performing rites on rare occasions
  4. Active – cult continues its sinister practices
  5. Recruiting – cult seeks new members
  6. On the verge of triumph! – cult is about to take a major step towards its goal

Cult Intent (roll 1d6)

  1. Worship of CREATURE with offerings, sacrifice
  2. Worship of GOD OR TITAN
  3. Study of TOME OR ARTEFACT
  4. Acquisition of power
  5. Keepers of CREATURE
  6. Summon GOD OR TITAN, end reign of humanity.

 Blasphemous Rites Include (roll 1d10)

  1. Worship outdoors at ritual site
  2. Worship at hidden temple, cave or ruin
  3. Bizarre surgical experiments
  4. Congress with CREATURE
  5. Use of drugs or extracts
  6. Ritual initiation
  7. Travel through dreams or magical gateways
  8. Use of ritual magic
  9. Ritual sacrifice
  10. Transformation

Creature (roll 1d100)

1-2 Bat-Thing
3-4 Bhole
5-6 Black Winged Ones
7-8 Byakhee
9-10 Colour Out of Space
11-15 Dark Young of Shub-Niggurath
16-20 Deep One
21-22 Dimensional Shambler
23-24 Elder Thing
25-26 Flying Polyp
27-28 Elder Thing
29-30 Formless Spawn
31-32 Gaseous Wraiths
33-38 Ghoul
39-40 Gnoph-Keh
41-42 Great Race of Yith
43-44 Hound of Tindalos
45-46 Hunting Horror
47-48 K’n-Yani
49-50 Lemurian
51-52 Lloigor
53-54 Masqut
55-56 Medusa
57-60 Mi-go
61-62 Moon-beast
63-64 Nightgaunt
64-66 Raktajihva
67-68 Rat-Thing
69-70 Sand-Dweller
71-72 Serpent Folk
73-74 Servitor of the Outer Gods
75-76 Shan
77-78 Shantak
79-80 Shoggoth
81-82 Son of Yog-Sothoth
83-84 Space-Eater
85-86 Star Vampire
87-88 Ultraviolet Devourer
89-90 Tcho-Tcho
91-92 Vampirish Vapour
93-94 Wendigo
95-96 Worm-Cultist
97-98 Xothian
99-100 Y’m-bhi

Gods & Titans (roll 1d20)

  1. Azathoth
  2. Chaugnar Faugn
  3. Cthugha
  4. Cthulhu
  5. Dagon
  6. Daoloth
  7. Ghatanothoa
  8. Gol-Goroth
  9. Hastur
  10. Ithaqua
  11. Mordiggan
  12. Mormo
  13. Nodens
  14. Nyarlathotep
  15. Quachil Uttaus
  16. Shub-Niggurath
  17. Tsathoggua
  18. Y’golonac
  19. Yig
  20. Yog-Sothoth

Tomes & Artefacts (roll 1d20)

1. Necronomicon, original
2. Necronomicon, modern
3. Cultes des Goules
4. De Vermis Mysteriis
5. King in Yellow
6. Book of Eibon
7. Pnakotic Manuscripts
8-9 Idol of GOD or TITAN
10-11 Idol of CREATURE
12-13 Relic or Mummy of CREATURE
14. Remains of ancient sorcerer or priest
15. Ancient Stone
16. Dust or Elixir
17. Cryptic Machine
18. Weapon or Tool
19. Enchanted Place
20. Gateway or portal

Structuring the Adventure

As a starting point, assume 3-5 core clues must be discovered and 1-3 hazards must be overcome to complete the investigation.

Random Core Clues

Clue Type

1-2 Academic
3-4 Interpersonal
5-6 Technical

Academic

  1. Accounting
  2. Anthropology
  3. Archaeology
  4. Architecture
  5. Art History
  6. Biology
  7. Cthulhu Mythos
  8. Cryptography
  9. Geology
  10. History
  11. Languages
  12. Law
  13. Library Use
  14. Medicine
  15. Occult
  16. Physics
  17. Theology
  18. Roll again, but it’s an impossibility
  19. Roll again, but it’s a personal connection
  20. Roll again, but it’s a terrible revelation

An Impossibility: This rock is older than the universe! This painting is moving! This library is carnivorous!

A Personal Connection: Your Medicine can’t tell you anything about this condition – but you do know a retired physician, Doctor Black, who lives nearby. Maybe he can help.

A Terrible Revelation: Oops! I just correlated hitherto disassociated fragments of knowledge. Rookie mistake.

Interpersonal

  1. Assess Honesty
  2. Bargain
  3. Bureaucracy
  4. Cop Talk
  5. Credit Rating
  6. Flattery
  7. Interrogation
  8. Intimidation
  9. Oral History
  10. Reassurance
  11. Streetwise
  12. Roll again, but it attracts the attention of sinister forces

Sinister forces: It’s not wise to ask questions about certain topics.

Technical

  1. Art
  2. Astronomy
  3. Chemistry
  4. Craft
  5. Evidence Collection
  6. Forensics
  7. Locksmith
  8. Outdoorsman
  9. Pharmacy
  10. Photography
  11. Roll again, but it’s an impossibility
  12. Roll again, but it exposes the investigator to something toxic or hazardous

Exposure: You see a strange light as you look through the telescope; you pick the lock, but discover the door’s a twist in space and time…

Random Hazards

  1. Athletics – a chase scene, a physical obstacle
  2. Conceal – a hidden trap
  3. Disguise – you must infiltrate a group
  4. Driving – dangerous conditions or a car chase
  5. Electrical Repair/Mechanical Repair – a piece of equipment is vitally needed
  6. Explosives – it’s the only way to be sure
  7. Filch – you must steal something
  8. Firearms – a combat scene at range!
  9. First Aid – someone’s dying or badly injured
  10. Health – exposed to a toxin
  11. Piloting – we’re on a boat
  12. Riding – we’re on a horse
  13. Stability – keep it together, man!
  14. Scuffling – a combat scene, up close!
  15. Sense Trouble – there’s something out there.
  16. Shadowing – quick, after them!
  17. Stealth – you must infiltrate a place
  18. Weapons – a combat scene, with sharp bits
  19. Roll again twice
  20. It’s a combat scene, with a complication. Roll again for the second ability involved, other than a combat ability. For example, Riding implies a shoot-out on horseback; Stealth implies an assassination attempt.

Putting It All Together

Let’s roll up a random adventure and see what comes of it!

Our initial hook is SCHOLARSHIP, and our location is ANTARCTICA. Clearly, we’re on a scientific expedition – maybe the Starkweather-Moore expedition promised at the end of At The Mountains of Madness. It’s hardly worth rolling an Apparent Situation in this case. The Horrible Truth is that there’s a CREATURE preying on people – specifically, a BLACK WINGED ONE, the assassins of the Cthulhu cult.

Our key clues are: BUREAUCRACY, ART and OUTDOORSMAN, and our random hazards are FILCH and RIDING.

So… the expedition to the Antarctic includes a secret worshipper of Cthulhu. He summons up a Black Winged One to kill other members of the expedition, for he seeks to get to the glacier where Cthulhu slumbers. Bureaucracy reveals that someone infiltrated the expedition under an assumed name, Art (plus Filch) means the investigators steal the cultist’s sketchbook and see his crazed scribblings of a buried god, and Outdoorsman & Riding imply a desperate sleigh-dog chase scene across the frozen wastes!

Another random attempt yields:

ARROGANCE for our hook, SPAIN for our location, VACATION for our Apparent Situation. That sounds like a bunch of idealists charging off to volunteer in the Spanish civil war. The horrible truth is that there’s a clash between two Cults.

The first Cult is a lone sorcerer who’s on the verge of triumph – he seeks to acquire power, and his blasphemous rites include Ritual Initiation.

He’s opposed by a second cult that Endemic in the Area, highly Secret, and worships… hmm. The Tcho-Tcho. Their rites include congress with a creature – rather an involving a second race, let’s assume it’s congress with Tcho-Tcho. Presumably, there’s a connection between the Plateau of Leng and the Meseta Central.

Obviously, if it’s the Spanish civil war, then the two cults are on opposite sides. A Communist sorcerer? Fascist Tcho-tchos? Or the other way around?

Our core clues are INTIMIDATION (Interrogating a prisoner, maybe?), OCCULT and COP TALK; hazards are Piloting and Sense Trouble.

So – the investigators are volunteers on the Republican side. Interrogating a prisoner, they learn of a fascist plot to bomb mountain villages. (Time to do some research on aerial bombardment and air power during the Spanish civil war; Guernica can be a touchstone here). OCCULT discovers the villages are being targeted because of their connection to the Tcho-Tcho cult; the investigators need to use Piloting and a borrowed biplane to shoot one bomber down before it commits the mass sacrifice needed a portal to Leng and the triumph of the Nazi sorcerer behind the bombing plan. Cop Talk and Sense Trouble warn the investigators that their Tcho-Tcho-worshipping allies will turn on them after the fighting’s done, and they should head back to the safely of the lowlands if they hope to survive…


Trail of Cthulhu is an award-winning 1930s horror roleplaying game by Kenneth Hite, produced under license from Chaosium. Whether you’re playing in two-fisted Pulp mode or sanity-shredding Purist mode, its GUMSHOE system enables taut, thrilling investigative adventures where the challenge is in interpreting clues, not finding them. Purchase Trail of Cthulhu, and its many supplements and adventures, in print and PDF at the Pelgrane Shop.

In our latest virtual panel, Kenneth Hite, Robin D. Laws, and Gareth Ryder-Hanrahan are joined by special guest, Chaosium’s Lynne Hardy, to discuss the perennial connection between H. P. Lovecraft’s Cthulhu Mythos. We cover the core elements of Cthulhu gaming, Call of Cthulhu’s impact on the hobby, striking a balance between hopelessness and flipping out, how gaming changed the mythos, our favorite bits of Yog-Sothothery, and more.


Trail of Cthulhu is an award-winning 1930s horror roleplaying game by Kenneth Hite, produced under license from Chaosium. Whether you’re playing in two-fisted Pulp mode or sanity-shredding Purist mode, its GUMSHOE system enables taut, thrilling investigative adventures where the challenge is in interpreting clues, not finding them. Purchase Trail of Cthulhu and its many supplements and adventures in the Pelgrane Shop.

In part 2 of Gar and Robin’s Play-By-Clip game, Gar walks us through his process for allocating GUMSHOE general ability points. And his character examines an alarming message he was not meant to read.


GUMSHOE is the groundbreaking investigative roleplaying system by Robin D. Laws that shifts the focus of play away from finding clues (or worse, not finding them), and toward interpreting clues, solving mysteries and moving the action forward. GUMSHOE powers many Pelgrane Press games, including The Yellow King Roleplaying Game, Trail of Cthulhu, Night’s Black Agents, Esoterrorists, Ashen Stars, and Mutant City Blues. Learn more about how to run GUMSHOE games, and download the GUMSHOE System Reference Document to make your own GUMSHOE products under the Creative Commons 3.0 Attribution Unported License.

Join us on YouTube for the latest Pelgrane Virtual Panel, with tips and tricks for GUMSHOE One-2-One play and design from Robin D. Laws, Gareth Ryder-Hanrahan, Ruth Tillman and Cat Tobin.


GUMSHOE One-2-One retunes, rebuilds and re-envisions the acclaimed GUMSHOE investigative rules set for one player, and one GM. Together, the two of you create a story that evokes the classic solo protagonist mystery format of classic detective fiction. Can’t find a group who can play when you can? Want an intense head-to-head gaming experience? Play face to face with GUMSHOE One-2-One—or take advantage of its superb fit with virtual tabletops and play online. Purchase Cthulhu Confidential and future GUMSHOE One-2-One products in print and PDF at the Pelgrane Shop.

13th Age permits players to take negative relationships with Icons, to define their characters in opposition to these mighty foes. Sometimes, though, it’s tricky to reconcile that opposition with the mechanical benefits of icons. It’s easy to justify getting a benefit from a positive or conflicted relationship – I’m a loyal follower of the Crusader, so sometimes I get help from the Crusader and his allies. It’s easy, too, to come up ways to involve enemies of the evil icons – I’m a foe of the Crusader – so sometimes I get help from the Priestess or the Great Gold Wyrm.

However, it can be a bit harder to come up with foes of the good or neutral Icons on the fly – especially if your players don’t want to ally with evil forces. Who stands against the Archmage, the Priestess, or the Great Gold Wyrm, but isn’t in league with darkness?

Archmage

Non-evil Iconic Enemies: High Druid, Elf Queen

  • Champions of nature, who object to the Archmage’s cavalier manipulation of the cosmic order.
  • Survivors of magical experiments gone awry.
  • Renegade spellcasters, who chafe under the Archmage’s strangehold on magical research.
  • Rival powers like the Elf Queen or the Diabolist, who have their own claims on magical authority that clashes with the Archmage’s domain.
  • Thieves or spies investigating the Archmage’s operations.
  • Magic-hating dwarves.
  • Spirits trying to escape magical bindings or wards.
  • Wizard King loyalists insulted by this pretender to the title

Dwarf King

Non-evil Iconic Enemies: Elf Queen, Prince of Shadows

  • Miners or adventurers objecting to the Dwarf King’s claim on all underground riches
  • Elves pressing the ancient rivalry with the dwarves
  • Robin Hood-esque brigands fighting dwarven mercantilist hegemony
  • Ambitious dwarven nobles or oppressed dwarven commoners plotting against the king

Elf Queen

Iconic Enemies: Dwarf King

  • Folk of Drakkenhall, who want to expand into territory claimed by the Queen
  • Dwarves pressing the ancient rivalry with the elves
  • Foes of the Dark Elves
  • Common folk who’ve been bewitched/abducted/enchanted by wayward fae
  • Agents of the Archmage, who seek magical powers forbidden by the Queen

Emperor

Non-evil Iconic Enemies:-

  • Revolutionaries and the unjustly accused, fighting against the oppressive state
  • True allies of the Emperor, conspiring against the evil nobles and advisors who’ve led the Emperor astray, or who use the Emperor’s name to further their own selfish ends
  • Enemies of corrupt officials
  • Separatists from the Empire’s remote provinces who plot to secede from Axis
  • Champions of some higher cause or calling than mere mortal law

Great Gold Wyrm

Non-evil Iconic Enemies: –

  • Well-meaning monks who believe it’s time for the Great Gold Wyrm to finally move on to the afterlife.
  • Unwilling heroes tormented by maddening dreams sent by the Wyrm.
  • Foes of corrupt or crazed paladins.
  • Heroic dragons who seek to replace the Wyrm; as long as the Wyrm remains trapped in the mouth of the Abyss, there’s no-one to counterbalance the threat of the Three

High Druid

Non-evil Iconic Enemies: Archmage, Emperor

  • Civilisation in all its forms – wood-cutters and farmers, scholars and city-builders, road-makers and hunters
  • Alchemists seeking curative ingrediants in the woods
  • Foes of the former High Druid, who fear the new Druid will prove as monstrous as her predecessor
  • Rival druids who seek to challenge the High Druid, and must weaken her first
  • Sages and spellcasters who fear the High Druid will endanger the Empire by breaking protective magical wards.

Priestess

Iconic Enemies: –

  • Servants of the Dark Gods, who believe the Priestess threatens cosmic balance by favouring the Light.
  • Servants of certain Light Gods, who believe the Priestess threatens cosmic balance by secretly favouring the Dark
  • People who just think anyone that nice must be up to something.
  • Those who feel that whatever divine penance or punishment they suffered was too harsh.
  • Merchants and nobles who aren’t evil, per se, but who’d like a little moral flexibility
  • Hard-as-nails adventurers who know that, sometimes, you have to be do cruel things for the greater good, and so are at odds with the Priestess and her followers

Prince of Shadows

Non-evil Iconic Enemies: Archmage, Dwarf King

  • The authorities in any city, cracking down on the Prince’s criminal empire
  • Victims of the Prince’s schemes
  • Rival criminals, taking their shot at the Prince.
  • Thief-takers and agents sent to recover stolen goods.

In response to Gar’s senseless assault on a beloved GUMSHOE ability, Robin reluctantly reveals a terrible secret.


GUMSHOE is the groundbreaking investigative roleplaying system by Robin D. Laws that shifts the focus of play away from finding clues (or worse, not finding them), and toward interpreting clues, solving mysteries and moving the action forward. GUMSHOE powers many Pelgrane Press games, including The Yellow King Roleplaying Game, Trail of Cthulhu, Night’s Black Agents, Esoterrorists, Ashen Stars, and Mutant City Blues. Learn more about how to run GUMSHOE games, and download the GUMSHOE System Reference Document to make your own GUMSHOE products under the Creative Commons 3.0 Attribution Unported License.

Controversy rocks the Pelgrane Video Dispatches as Gareth Ryder-Hanrahan uses our newly revitalized YouTube channel to call out his least favorite GUMSHOE ability.


GUMSHOE is the groundbreaking investigative roleplaying system by Robin D. Laws that shifts the focus of play away from finding clues (or worse, not finding them), and toward interpreting clues, solving mysteries and moving the action forward. GUMSHOE powers many Pelgrane Press games, including Trail of Cthulhu, Night’s Black Agents, Esoterrorists, Ashen Stars, Mutant City Blues and Fear Itself. Learn more about how to run GUMSHOE games, and download the GUMSHOE System Reference Document to make your own GUMSHOE products under the Creative Commons 3.0 Attribution Unported License.

We usually do our perennial GUMSHOE panel, the Investigative Roleplaying Masterclass, at conventions ranging from Gen Con to Dragonmeet to the Kraken. With the convention circuit suspended indefinitely, we thought it was time to do a virtual version of it, as part of our lockdown-inspired ramp-up of our YouTube channel. The live stream has now been archived to view at your leisure. It starts with Ken arriving fashionably late in order to preserve the in-person convention feel:

You’ll note that we retitled it a bit to be search-friendly for the broader YouTube audience. And yes, that includes the dreaded space between “table” and “top” in “table top roleplaying” because that’s how the kids search for it these days.

To join our fledgling Discord channel and get announcements and access for future Pelgrane virtual panels, drop us a line at support@pelgranepress.com.


GUMSHOE is the groundbreaking investigative roleplaying system by Robin D. Laws that shifts the focus of play away from finding clues (or worse, not finding them), and toward interpreting clues, solving mysteries and moving the action forward. GUMSHOE powers many Pelgrane Press games, including Trail of Cthulhu, Night’s Black Agents, Esoterrorists, Ashen Stars, Mutant City Blues and Fear Itself. Learn more about how to run GUMSHOE games, and download the GUMSHOE System Reference Document to make your own GUMSHOE products under the Creative Commons 3.0 Attribution Unported License.

“The oldest and strongest emotion of mankind is fear, and the oldest and strongest kind of fear is fear of the unknown”, to quote Lovecraft. However, when it comes to translating his fiction into games, unknown monsters can be tricky to handle. In a roleplaying game, the players need to be able to make meaningful decisions, and for that, they need some information to give context to those decisions. The more they know, the less unknown there is. (One reason why classic monsters like vampires work well in rpgs – the players know the rules already, and you can present them as a part of a bigger mystery instead of making the investigation all about the monster. They no longer draw their power from fear of the unknown – it’s all about fear of what they might do with their known powers and hungers.)

Sometimes, getting more information about an unknown threat can be scarier. For example, if the characters are the crew of an isolated research base, and they find the mangled corpse of one of their co-workers outside on the ice, that’s scary – there’s a monster out there! However, if the characters then discover another corpse inside a locked room in the base, that’s even scarier – can the monster walk through walls? Is it a shapeshifter, now disguised as one of the crew? Is it in the air ducts?

The players need to discover the ‘rules’ of the unknown monster, and there’s an awkward dance here, especially if the monster can only be defeated by exploiting a particular trait, and especially in a one-shot or short adventure. You need to ensure the players find the information they need without making it obvious or contrived (nothing spoils atmosphere like having a really obvious LOOK, LOOK, HERE’S THE IMPORTANT BIT scene), while still keeping the monster mysterious. So, what are some elegant ways of getting information to the players, without making it seem like you’re setting up the pins with one hand and handing the players a bowling ball with the other?

(An aside – one key question to ask yourself is always, “what’s the characters’ goal?” If the characters can achieve their aims – break the family curse, escape the nightmarish town, discover the fate of their old friend – without having to defeat the monster outright, you can get away with revealing less about the monster. But if your campaign setup or scenario hook demands that the characters take an active role in investigating or thwarting the Mythos, they’re likely to press on to a final confrontation – and if you want to avoid that final confrontation from becoming a chase scene or a shootout, it’ll have to hinge on a meaningful decision by the players, which means giving information about the unknowable horror.)

  • GUMSHOE, of course, promises the players will always get the clues they need if they use their investigative abilities. Try to use multiple tangential clues to the nature of the monster, as opposed to one core revelation that spells out what must be done. Say, for example, the characters are up against a horror from the logos – a monster that manifests when its name is spoke aloud. Dropping lots of hints that connect to this – a corpse with its tongue torn out (Forensics), Occult references to the unspeakable one, a bunch of references to the Scottish play (Art History) – lets the players make that final intuitive leap.
  • In The Dunwich Horror, the Son of Yog-Sothoth can only be destroyed by a ritual. Lovecraft handles this by having the first Whately brother draw attention to the book containing the banishing ritual in an earlier scene. Have the players discover information about the monster while pursuing an apparently unrelated lead.
  • Pacing out the information also helps. The bigger the gap between the players discovering information about the monster, and actually encountering the monster, the better. If the players run into a Colour Out Of Space five minutes after encountering the local inventor with his shed full of high-voltage electrical equipment, then it’s obvious that the Keeper intends for them to use electromagnetic fields as a weapon against the otherwise invincible foe. However, if the players run into the inventor near the start of the adventure, and encounter the Colour much later, then it feels much more like the players cleverly calling back to an established bit of background colour. Lovecraft uses something like this technique in The Case of Charles Dexter Ward, where Doctor Willett discovers the dismissal formula long before he finally uses it to banish Joseph Curwen. (Of course, the scene where Dr. Willett randomly starts chanting spells out loud would be intolerable railroading in a tabletop game…)
  • Another approach is to undercut expectations. Say the players find out that there was a series of murders fifty years ago when a cult opened up the Box of the Shining Trapezohedron, and now there’s another set of identical murders. Clearly, someone’s taken the gem from the magic box, and the obvious solution to the scenario is to put the gem back in the box. Twist this by having the cult destroy the box before the players can return the gem. Now, the players have to come up with their own variation on that original solution by finding another way to bury the gem before the monster finds them…

In the first installment of their new Play By Clip series, Robin and Gar invent a new flavor of GUMSHOE—and an ancient city of galactic mystery. Check out Mother of Cities.


GUMSHOE is the groundbreaking investigative roleplaying system by Robin D. Laws that shifts the focus of play away from finding clues (or worse, not finding them), and toward interpreting clues, solving mysteries and moving the action forward. GUMSHOE powers many Pelgrane Press games, including Trail of Cthulhu, Night’s Black Agents, Esoterrorists, Ashen Stars, Mutant City Blues and Fear Itself. Learn more about how to run GUMSHOE games, and download the GUMSHOE System Reference Document to make your own GUMSHOE products under the Creative Commons 3.0 Attribution Unported License.

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