Case 212
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.
Sam
“Elliot and Parker are both innocent.”
Logan
“Either Elliot or Kendall is guilty.”
Elliot
“Either Logan or Kendall is guilty.”
Parker
“Elliot is innocent.”
Kendall
“Neither Elliot nor Parker is guilty.”
Who is guilty?
Solution: Logan
If Logan is guilty, Logan's statement is false and every other statement is true. Testing the other suspects creates at least one contradiction.