Case 093
The Missing File
A signed contract file vanished from the archive.
Rule: exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Reese
“Neither Kendall nor Kai is guilty.”
Kendall
“Neither Kai nor Avery is guilty.”
Kai
“Either Kendall or Taylor is guilty.”
Avery
“Taylor is guilty.”
Taylor
“Either Kendall or Avery is guilty.”
Who is guilty?
Solution: Taylor
If Taylor is guilty, Taylor's statement is false and every other statement is true. Testing the other suspects creates at least one contradiction.