Interactive Lab · Fictional Cases

Solve the Case

Study evidence, test the timeline and choose the strongest lead. These scenarios are fictional and designed for reasoning practice.

Fictional Case #1

The Hotel Room

A fictional guest reports a valuable manuscript missing from a locked hotel room between 8:10 and 8:40 p.m.

📄 The electronic lock log records one staff key entry at 8:22 p.m.

📄 Hallway CCTV shows the housekeeper entering with a linen cart at 8:21 and leaving at 8:25.

📄 The guest says the manuscript was last seen at 8:10.

📄 A room-service receipt shows the guest signed for dinner in the lobby at 8:18.

Fictional Case #2

A fictional museum archive discovers that a sealed box has vanished after a power outage.

📄 The outage lasted from 6:02 to 6:17 p.m.

📄 A battery-backed door sensor records the archive door opening at 6:09.

📄 Only two staff badges were authorized that evening.

📄 One badge owner was on a video call from another building from 5:55 to 6:20.

📄 The second badge owner first claimed the door sensor could not work during an outage.

Fictional Case #3

A fictional envelope disappears from a train-station locker before investigators can collect it.

📄 The locker code was sent by text to three people at 2:04 p.m.

📄 Station footage shows Person A boarding a train at 2:10.

📄 Person B appears at a café camera across town from 2:00 to 2:35.

📄 A transit card registered to Person C entered the station at 2:16.

📄 The locker was opened at 2:19.