CASE ZERO
Case 222

Who is guilty?

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

Amira: “The guilty person is one of Tess, Hugo or Mae.”
Jack: “Neither Tess nor Hugo is guilty.”
Tess: “Tess is innocent.”
Hugo: “Jack is innocent.”
Mae: “Tess 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.