Case 326
The Broken Seal
A tamper seal on a storage crate was cut overnight.
Rule: exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Lane
“Either Jordan or Parker is guilty.”
Cameron
“Parker is innocent.”
Avery
“Lane and Cameron are both innocent.”
Jordan
“Cameron is guilty.”
Parker
“Neither Lane nor Avery is guilty.”
Who is guilty?
Solution: Jordan
If Jordan is guilty, Jordan's statement is false and every other statement is true. Testing the other suspects creates at least one contradiction.