Case 083
The Empty Safe
A small office safe was found empty in the morning.
Rule: exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Parker
“Either Finley or Casey is guilty.”
Finley
“Reese is guilty.”
Reese
“Either Parker or Finley is guilty.”
Alex
“Parker is innocent.”
Casey
“Neither Reese nor Alex is guilty.”
Who is guilty?
Solution: Finley
If Finley is guilty, Finley's statement is false and every other statement is true. Testing the other suspects creates at least one contradiction.