Agent X · Case Files
27 case files · Free on Android · iOS coming soon
Every Agent X murder mystery, spoiler-free: the victim, the scene and the suspects. The solution lives only in the game.

Three people were inside. All three hide something. Only one killed him.

Opening night. The star finished act one and never made it to act two.

The sea returned a man who never went into it.

Everyone in the building heard the shot. Nobody heard the elevator.

The metronome was still ticking when they found her. But the music had stopped.

Last week he sold the jackpot ticket — 1.4 million. Nobody claimed it. Nobody walks away from that money. Unless claiming it would give them away.

His sealed case left at 2,300 grams and arrived at 2,000. The seal is intact. Seals do not lie — people with seal tools do.

He died from bee venom, but he has no stings. And his hives now stand three meters from where they stood all summer. Dead men do not move hives.

The engraved toast glasses moved twice tonight. The man who died was never the target.

In thirty-one years she never misplaced a book. On her last night, one book sat on the wrong shelf.

He died on live TV. The station cut to the weather, and everyone watching saw him fall.

Eight weeks of no rain, yet on Plot 11 a rain barrel is full to the top. That isn't water. It's a hiding place.

Five people went up on the last car. Four came down. The mountain can't count, so somebody counted for it.

The tasting log is clear — no food served was poisoned. Julian chewed his pens for thirty years, and one person in that kitchen remembered.

Every clock on the ward runs seven minutes fast. That is the whole case.

Frost on the inside of the glass in high summer. No wounds, no poison — just one hour of air with almost no oxygen in it.

The murder weapon is knowledge. Exactly three people knew about his allergy. The case is a countdown from three.

Nineteen paper boats in the reeds — and the twentieth still dry in his coat, dated tomorrow.

The sand on his clothes is fine white silica. The ninth hole uses coarse river sand. He was moved.

The staging list has 214 rented items. The house holds 215. The killer brought the extra one in — the weapon.

The broken seam was re-sewn by a patient hand — with upholstery thread, not climbing thread. Someone sewed him an accident.

The cave keeps everything at ten degrees — the cheese, the truth, the body. The door only locks from outside.

Every night at three he played one song and said nothing for four minutes thirty-three seconds. Somebody set a watch by his silence.

A gas leak, sealed windows, an open valve — and a canary singing loudly three feet from the body.

She cleaned paintings for thirty years. The one on her easel was cleaned twice in one night. The second time hid what the first found.

His logbook says he made the 2:15 crossing on calm water. But the tide table says the channel was dry mud at that hour. One of those books is lying.

His scale was the only honest one in the market. Now it lies by exactly forty grams. Scales don't do that alone. Someone changed it.

