Two Timestamps, One Lie

The case file

Between 6:00 PM and 6:30 PM, the gym's motion sensor logged movement in the locker room -- and a gym locker was forced open. Four people were nearby that evening. Whose alibi falls apart?

The rule: All four findings come from verified records -- logs, cameras, receipts. Exactly one suspect's story contradicts the evidence.

The clues

1. Tom Beck: A parking receipt puts Tom Beck's car at north garage at 5:54 PM. The shift log shows Tom Beck clocked in at downtown at 6:30 PM.
2. Felix Grant: Phone tower records place Felix Grant near river toll plaza at 5:46 PM. The toll transponder on Felix Grant's car pinged at river toll plaza at 6:43 PM.
3. June Park: The toll transponder on June Park's car pinged at river toll plaza at 5:54 PM. Phone tower records place June Park near riverside park at 6:45 PM.
4. Theo Marsh: The keycard log shows Theo Marsh badging into north garage at 5:40 PM. Phone tower records place Theo Marsh near the mall at 5:50 PM.

Who did it?

1. Felix Grant
2. Tom Beck
3. Theo Marsh
4. June Park

The verdict is still sealed. The answer is revealed here tomorrow — or play today's case and render your own verdict now.