Case 020
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.
Rowan
“Neither Dakota nor Noah is guilty.”
Dakota
“Rowan and Noah are both innocent.”
Noah
“Rowan and Dakota are both innocent.”
Parker
“Rowan is guilty.”
Jules
“Dakota is innocent.”
Who is guilty?
Solution: Parker
If Parker is guilty, Parker's statement is false and every other statement is true. Testing the other suspects creates at least one contradiction.