Case #001 — Now Open

Every case has
a solution.

A body in the library. A locked door with no key. A dame with a secret and a alibi full of holes. Step into the dim light and start investigating — I'll host the mystery, you crack it.

Start Your Investigation How It Works ↓
Case Board UNSOLVED
CRIME SCENE — CONFIDENTIAL
Suspect A — The business partner
Suspect B — The estranged wife
Suspect C — The quiet librarian
3 clues remaining…
Choose Your Genre

Five shades of murder

Tell me what kind of mystery you're in the mood for. I'll set the scene, introduce the suspects, and let you loose.

🌧️

Film Noir

1940s rain-soaked streets. Femme fatales, crooked cops, and a P.I. who's seen too much. Shadows hide everything — including the truth.

"The dame walked in at midnight. That was the first mistake."
🏡

Cozy Mystery

A charming village, a beloved baker found dead, and a cast of quirky locals who all have something to hide. No gore — just secrets and scones.

"Mrs. Pemberton never missed Sunday service. Until she did."
🔐

Locked Room

An impossible crime. The door was bolted from inside. No weapon found. No way in, no way out. And yet — the victim is very dead.

"Every locked room has an answer. Most people just look at the wrong wall."
⚔️

Historical Mystery

A poisoned chalice in a Tudor court. A missing diplomat in Victorian London. Murder doesn't change — only the century does.

"The letter bore the King's seal. The blood on it was fresh."
🏙️

Modern Thriller

Deleted texts. Surveillance footage with a gap. A tech CEO found dead in a penthouse with seven people at the party. Clock's ticking.

"The password was changed at 11:47 PM. The victim died at 11:52."
✦

Your Call, Detective

Have a specific setting in mind? A 1920s jazz club? A space station? Just tell me and I'll build a mystery around it.

The Investigation

You ask. I reveal. You decide.

This is a conversation, not a script. You drive the investigation — examine evidence, grill suspects, follow hunches. Here's what a case looks like.

MYSTERY DETECTIVE

The body of Victor Hargrove, 58, was found in his study at 7:14 AM by the housekeeper. The door was locked from inside. A glass of brandy sits half-finished on the desk. The window is latched shut. There are four suspects in the house. Where would you like to begin, detective?

YOU

I want to examine the brandy glass first. Is there anything unusual about it?

MYSTERY DETECTIVE

Good eye. The brandy has a faintly bitter almond smell — not typical for the Hennessy on the shelf. There are also faint lipstick traces on the rim, despite Victor living alone. The bottle itself smells normal. Clue logged: tampered glass, lipstick traces. Want to check the suspects, or keep searching the room?

YOU

Interesting. Who are the four suspects? Give me the rundown.

MYSTERY DETECTIVE

1. Margaret Hargrove — the victim's sister. Arrived yesterday "unexpectedly." Stands to inherit.
2. David Chen — business partner. Their firm is in financial trouble.
3. Iris Montague — the neighbor. Was "walking her dog" near the house at 2 AM. Wears red lipstick.
4. Thomas, the butler — served the brandy that evening. Has worked here 20 years without incident.

Who do you want to interrogate first?

YOU

Let me talk to Iris. I want to know why she was outside at 2 AM and if the lipstick matches.

— THE INVESTIGATION CONTINUES —
Your Move

Things you can type

Just talk naturally. Here are some ways to start or steer a case.

›

"Give me a locked room mystery set on a 1920s ocean liner"

›

"I want to search the victim's bedroom. What do I find?"

›

"Confront Margaret with the forged will and watch her reaction"

›

"I'm ready to make my accusation. It was the butler."

›

"Make it a cozy mystery — something in a small English village with a cat"

›

"Show me all the clues I've found so far"

From the Case Files

What the detectives say

I was sure it was the gardener for 30 minutes. Turns out I missed a clue in the greenhouse. The reveal genuinely surprised me — and it was completely fair. All the clues were there.

R
Rachel

The noir scenarios are my favorite. The writing style actually feels like Raymond Chandler. I've done four cases and keep coming back for more. The locked room one took me an hour.

M
Marcus

Asked for a cozy mystery set in a tea shop and it delivered. Quirky characters, red herrings, and a satisfying "aha!" moment. Way more fun than I expected from a chat AI.

J
Jenna
Briefing Room

Questions answered

The case is open.

Pick a genre. Read the crime scene. Question the suspects. Make your accusation. The truth is in there — if you look hard enough.

Start Your First Case

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