CASE ZERO
Case 158

Who is guilty?

Exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.

Amira: “The guilty person is either Tess or Mae.”
Jack: “Amira is innocent.”
Tess: “The guilty person is either Amira or Mae.”
Hugo: “The guilty person is either Jack or Mae.”
Mae: “None of Jack, Tess or Mae is guilty.”
Random case
Solution: Mae is guilty. Testing each possible culprit leaves this as the only assignment where the culprit's statement is false and all four innocent statements are true.