CASE ZERO
Case 294

Who is guilty?

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

Amira: “The guilty person is either Amira or Tess.”
Jack: “The guilty person is one of Jack, Tess or Mae.”
Tess: “Mae is guilty.”
Hugo: “Neither Jack nor Mae is guilty.”
Mae: “The guilty person is one of Amira, Jack or Tess.”
Random case
Solution: Tess 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.