Case Files · Cold Cases · Play Instantly
Murder Mystery Cases to Solve Online
Open the case files. Every dossier below is a complete murder mystery you can solve online: examine the evidence, read the witness statements, interrogate the AI suspects with your own questions, and name the killer. No kit, no group, no download — pick a cold case and play instantly in your browser.
The Blackwood Manor Dinner
A toast is raised at Blackwood Manor — and the host never lowers his glass.
The Corner Office
Four keycards, one sealed floor — and the CFO dead at his desk hours before his audit reaches the board.
The Gilded Cage Speakeasy
The gin is cold, the jazz is loud — tonight the Gilded Cage loses its canary.
Midnight on the Azure Queen
Between two ports the Azure Queen sails on — and her owner never sees the dawn.
Curtain Call at the Lyceum
The Lyceum went dark for ten years. The night it reopened, the curtain never rose on act two.
Masquerade at Palazzo Moro
At midnight the masks come off at Palazzo Moro — one guest never takes hers off.
Last Train to Vienna
The night express left Innsbruck with a killer aboard — and six people sealed in one snowbound sleeper car.
Whiteout at Kestrel Lodge
The storm closed the only road off the mountain at dusk — by dawn, Kestrel Lodge held six guests, one body, and no way down.
New case files are added regularly. Check back for fresh unsolved cases.
How an Investigation Works
Open the dossier
Read the case brief: who died, where, and what the first responders found. The victim profile usually hides the first thread worth pulling.
Walk the crime scene
Study the locations and the evidence log — toxicology, CCTV footage, torn letters, key logs. Every physical clue constrains who could have done it.
Read the witness statements
Each suspect arrives with a stated alibi. Note where the statements overlap — and where exactly one account stands alone.
Interrogate the suspects
Question every suspect in free-form conversation. Press on contradictions, quote one suspect to another, and watch the alibis bend.
Make the accusation
When you can name the killer, the motive, and the method, issue the warrant. Guesses are limited — accuse like you mean it.