MINI ALIBImedium
Uncle Logic's keys have disappeared.
Exactly ONE suspect is lying.
WHO MOVED THE KEYS?
Clues
- Mason“Nora moved them.”
- Nora“Daniel moved them.”
- Daniel“Mason didn’t move them.”
- June“Nora is lying.”
Answer
Nora
Why it works
Nora is the only possible culprit who leaves exactly one false statement.
- Test Nora as the person who moved the keys.
- Mason’s statement is true, Nora’s statement is false, Daniel’s statement is true, and June’s statement is true. That produces exactly one liar: Nora.
- If Mason moved them, three statements would be false. If Daniel moved them, two statements would be false. If June moved them, two statements would be false.
- Only Nora satisfies the rule that exactly one suspect is lying.