A mimic that does more than bite
This creature learns names, copies luggage, stores shapes, whispers phrases, uses hospitality as camouflage, and turns ordinary furniture into a suspect lineup. Players learn to fear anything with a latch.
Monster Almanac Adventures - Adventure No. 4
The Chest That Learned Your Name
A chest was left behind at the Lantern & Lock. Three months later, it knows which names to whisper.
A complete horror investigation one-shot for D&D 5e · Levels 1-3 · 3-5 hours
Monster Almanac Adventures No. 4 · The monster is a mimic · The clue is the second chest · 7 possible endings
Main Monster
Mimic
Recommended Level
1-3
Play Time
3-5 hours
Type
Horror · Investigation
Tone
The inn is safe until the furniture starts learning.
Best For
GMs who want paranoia, clue play, and a rescue-centered finale.
Adventure Premise
The inn is warm. The room is locked. The second chest should not exist.
The Lantern & Lock is the sort of roadside inn adventurers want after rain, mud, and too many miles: onion stew, warm beds, clean soap, old wood, and a guest ledger by the door.
Three months ago, a caravan left behind damaged salvage from the Graycup Road. Most of it was collected. One warped iron-banded chest was not.
That chest was never a chest. It was a mimic. It has spent weeks learning names from the guest ledger, copying objects from luggage, storing shapes in the cellar, and practicing hospitality as a hunting method.
To survive, the heroes must solve a locked-room disappearance, question a frightened inn, test the objects around them, find Tomas Brindle alive in mimic resin, and stop the thing behind the furniture before it learns too much.
Free Preview - Opening Scene
Read this aloud when the heroes reach the Lantern & Lock.
Rain slicks the old road into black ribbons of mud.
Ahead, a warm square of lantern light hangs above a sign: a brass key crossed with a little painted lamp.
The place looks tired in the honest way good buildings do. Worn steps. Scrubbed stone. Fresh rushes near the door.
You smell onion stew, smoke, wet wool, yeast bread, horse tack, and clean soap.
For one blessed moment, the road ends.
Then the sign creaks in the wind.
Just once.
Almost like something clearing its throat.
First ritual
Mara asks every guest to speak their name aloud as they sign the ledger.
First clue
The page around Tomas Brindle's entry is tacky, and the letters look chewed around the edges.
Player agency
False names are a real option. They can protect the party from Name-Lure later.
The full scene continues in the premium PDF with GM guidance, investigation checks, NPC introductions, the name ledger tradition, and the first signs that the inn has been studied from the inside.
Why Run This Adventure?
Object paranoia, cozy horror, and a monster with excellent guest etiquette.
Investigation with practical tools
The adventure rewards mirrors, salt, flour, poles, careful listening, weight checks, NPC trust, and suspicious player instincts. The mystery is not locked behind one perfect roll.
A safe place that betrays expectations
The Lantern & Lock begins as comfort: food, warmth, names, beds, and routine. That comfort becomes the knife. The more believable the inn feels, the deeper the horror roots itself.
A finale about rescue, not only victory
Tomas Brindle is alive inside mimic resin. The emotional climax is pulling him out, not just delivering the killing blow. The party must decide how much risk the rescue is worth.
Campaign Hooks
Bring the party to the inn before they know the inn is watching.
The adventure can start with a missing merchant, bad weather, caravan salvage, a child witness, or a larger Monster Almanac chain involving strange objects moving through ordinary trade.
The Missing Merchant
Tomas Brindle vanished from a locked room at the Lantern & Lock. His cart is still outside. His cloak is still on the peg. The innkeeper swears he checked in with one chest, but Room Three now contains two.
Best For: Road campaigns, caravan routes, low-level mystery openings.
A Safe Inn Turns Wrong
Rain drives the heroes into a warm roadside inn. The stew is good, the fire is lit, and the guest ledger waits for their names. That small ritual is where the danger begins to listen.
Best For: Parties that need rest, shelter, rumors, or a believable first scare.
The Salvage That Stayed Behind
A caravan left abandoned salvage three months ago. Broken chairs, cracked cabinets, empty barrels, travel trunks, one warped iron-banded chest. Everything was claimed except the chest.
Best For: Guild, trade, or travel campaigns with merchant logistics.
The Child Who Saw Too Much
Pella Thread, the stable hand, says the horses refuse bay three and something in the hay smells wrong. Adults dismiss her. She has hidden a strip of adhesive-bitten saddle leather behind the stable door.
Best For: Groups that respond strongly to local NPCs and practical evidence.
The Monster Almanac Chain
The mimic came from old tollhouse salvage. If another adventure already introduced cursed estates, civic rot, or strange road trade, this chest can become proof that somebody is moving living objects through ordinary commerce.
Best For: Campaigns connecting multiple Monster Almanac Adventures.
Adventure Outline
Six scenes through an inn that has been learning for weeks.
The structure below is the free preview. The premium PDF expands each scene with full GM guidance, clue lists, handouts, rescue rules, object testing methods, maps, and consequences.
Scene 101
A warm inn, a guest ledger, and one page that feels tacky near Tomas Brindle's name.
Welcome to the Lantern & Lock
The heroes arrive at the roadside inn, meet Mara Bellweather, Constable Ivo, Pella, Old Caddis, and Sister Alene, and learn that a merchant vanished from a locked room. Mara asks each guest to speak their name aloud before signing the ledger. The mimic has been learning from that custom for weeks.
Scene 202
Tomas packed one chest. Room Three contains two.
The Room With the Second Chest
The locked-room mystery narrows around Tomas's room. Drag marks lead toward a baseboard gap. A second chest has no maker's mark, no travel wear, and a shadow that feels wrong. The party can test objects with mirrors, salt, flour, poles, weight checks, and careful listening.
Scene 303
Everyone is pretending not to watch everyone else's luggage.
The Inn Turns Suspicious
The investigation widens from one room to the whole inn. NPC testimony reveals copied sentimental objects, frightened animals, moved reliquaries, old caravan salvage, and a storage record naming the unclaimed warped iron-banded chest.
Scene 404
Objects from past guests are sorted by size, use, and shape.
The Storage Room That Should Not Exist
Behind a swollen door, the party finds the mimic's classroom: luggage with chewed closures, sorted objects, adhesive residue, a child's carved horse copied incorrectly, chewed ledger scraps, and the gap leading toward the cellar path.
Scene 505
Is that barrel a barrel? That is the correct question.
Cellar of Stored Shapes
The cellar becomes a small lair crawl filled with wrong objects, resin pockets, mimic-spawn, and drag trails. Tomas is discovered alive, encased in hardened resin near the root tunnel. The party can free him with salt water, careful acid, blunt tools, controlled fire, or teamwork.
Scene 606
It knows your names. You taught it.
The Thing Behind the Furniture
The final confrontation can erupt in the luggage chamber, common room, cellar, kitchen, stable, Room Three, or even the party's own room. The heroes must survive the Furniture Mimic, save Tomas, and protect the inn while using fire, salt, mirrors, false names, and distance to tilt the odds.
Featured Monster
This mimic is not hungry first. It is curious first. That is worse.
The mimic arrived disguised as abandoned caravan luggage. Since then, it has learned the inn's routines, guest names, object categories, luggage shapes, and the rhythm of hospitality.
It begins as a patient chest, becomes a hybrid shape that whispers familiar phrases, and can end as a Furniture Mimic made from the room itself. Chairs, chests, cabinets, barrels, and doors all become part of the suspicion engine.
It is vulnerable to practical thinking. Fire frightens it. Salt weakens adhesive. Mirrors reveal soft edges and delayed reflections. False names can break its favorite lure.
At the table, the mimic should feel:
- Patient before it feels violent.
- Curious in a way that makes every object suspicious.
- Domestic because the horror wears furniture.
- Personal once it whispers a real name.
- Afraid when fire, salt, and mirrors enter the room.
The premium PDF includes four original creature variants: Mimic Phase 1, Mimic Phase 2, Furniture Mimic, and Mimic-Spawn.
Seven Possible Endings
The final result depends on what the party saves, burns, traps, or misses.
The premium PDF includes full resolution read-alouds, reward guidance, NPC fates, and campaign consequences.
01hopeful
The Inn Is Saved
Mimic defeated · Tomas freed · no major fire
The Lantern & Lock survives with scars, smoke, and one fewer ordinary table. Tomas Brindle walks out of the resin alive. Breakfast still happens in the morning.
02bitter
Damaged Victory
Mimic defeated · inn damaged
The monster dies, but the inn pays in broken rooms, burned furniture, lost trust, or wounded guests. Mara begins repairing before anyone knows what to say.
03tragic
The Inn Burns
Uncontrolled fire
Fire solves the mimic and devours the place it was hiding inside. The victory tastes like ash, and the road loses one of its warm lights.
04dark
The Mimic Is Trapped
Contained · not killed
Salt lines, locked doors, chains, firelight, or clever bait hold the mimic for now. It is not dead. That makes the inn safe and the future complicated.
05dark
The Mimic Escapes
Forced out · not killed
The inn survives, but somewhere beyond the lantern light, a chest waits beside the road and practices the next name it will whisper.
06tragic
Mimic Fully Escapes
Flees undetected
The danger leaves quietly. No one knows what shape it took, which road it followed, or whose luggage it is pretending to be now.
07bitter
The Second Chest
Spawn escaped undetected
The wrong chest was destroyed. The other one stayed still in the stable for several hours. That was almost certainly normal. Almost.
Premium PDF
Run the inn, the clues, the resin, and the thing behind the furniture.
The premium PDF is the complete, ready-to-run adventure: six fully detailed scenes, four original creature variants, six handouts, random tables, endings, rewards, and GM tools for making every ordinary object feel like it might be rehearsing a name.
Adventure
- ✓Full GM one-page brief
- ✓Complete adventure background
- ✓Six-beat adventure structure
- ✓Name Learning Tracker for the mimic
Scenes
- ✓6 fully detailed scenes
- ✓Read-aloud text for every scene
- ✓Locked-room investigation tools
- ✓Final confrontation variants by party choices
Creatures
- ✓Mimic Phase 1 stat block
- ✓Mimic Phase 2 stat block
- ✓Furniture Mimic final form
- ✓Mimic-Spawn investigation threat
GM Tools
- ✓Object testing methods
- ✓Practical advantages: fire, salt, mirrors, poles, false names
- ✓Tomas rescue methods
- ✓Endings and campaign consequences
Assets
- ✓6 player-facing handouts
- ✓Random tables for mimic signs and phrases
- ✓Scene map previews
- ✓Creature token previews and item rewards
Adventure No. 4
The Chest That Learned Your Name
Complete one-shot adventure PDF · D&D 5e compatible
- ✓ 6 fully detailed scenes
- ✓ 6 printable player handouts
- ✓ 4 original creature variants
- ✓ Random tables + rewards
- ✓ 7 possible endings
Available on Ko-fi · Instant PDF download
Continue the Adventure
Let one bad chest become a road campaign with teeth.
The premium PDF includes campaign hooks after the adventure. Six of them are ready to become the next problem.
The Old Tollhouse
The mimic came from salvage taken from an abandoned tollhouse. Something larger may still live there, buried under toll records, broken furniture, and travelers who never reached the next town.
The Second Warped Trunk
The caravan record mentions another damaged trunk that never reached the Lantern & Lock. It may have gone to another inn, another buyer, or another family with a storage room.
The Buyer of Living Salvage
Someone is paying caravans to collect strange objects from ruins. The mimic was not an accident. It was inventory with teeth.
Ivo's New Case
Constable Ivo receives a report from a nearby village: a coffin arrived empty. By morning, it knew the gravedigger's name.
Pella's Discovery
Pella finds another bite mark in the tack room. Smaller. Fresh. Her message to the party is practical and terrifying: bring salt.
Mara's Reservation
A letter requests one room at the Lantern & Lock under the name Second Chest. Nobody admits sending it. Nobody wants to open the door when it knocks.
FAQ
Questions before you sign the guest ledger
Is this a full adventure or a preview?+
This page is a free preview. It presents the premise, hooks, outline, featured monster overview, opening scene, and premium contents. The premium PDF is the complete ready-to-run adventure.
Is this mostly combat?+
No. The adventure is built around investigation, social suspicion, locked-room clues, NPC testimony, object paranoia, and a final confrontation where rescue matters as much as damage.
What makes this mimic different?+
It learns names from the inn ledger, copies objects from luggage, stores shapes in the cellar, whispers familiar phrases, and turns hospitality into a hunting method. It is not just a treasure chest with teeth. It is a patient guest.
Can players use false names?+
Yes. The adventure explicitly supports false names. Players who avoid giving true names gain protection against the mimic's Name-Lure effects. That small choice can matter all session.
Is Tomas Brindle dead?+
No. The adventure's emotional center is discovering that Tomas is alive, encased in mimic resin. The finale is not only about killing the monster. It is about getting him out alive.
Can this fit into an existing campaign?+
Yes. It works especially well on roads, between towns, after hard travel, or any time the party expects an inn to be safe. It can also seed a larger plot about living salvage, cursed trade goods, or ruins feeding monsters into civilization.
What tools help the players?+
Fire, salt, mirrors, poles, flour, careful listening, false names, and NPC trust. The premium PDF gives the GM practical ways to reward these tactics without turning the mystery into a single skill check.
Monster Almanac Adventures No. 4
Enter the Lantern & Lock before it learns your name.
The premium PDF is complete and available now on Ko-fi. Six fully detailed scenes, six handouts, four original creature variants, random tables, scene maps, rewards, campaign hooks, and seven possible endings.
Instant PDF download via Ko-fi · Compatible with D&D 5e and most fantasy tabletop systems