CASE ZERO
Case 354

Who is guilty?

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

Ava: “Neither Ava nor Miles is guilty.”
Eli: “Zoe is guilty.”
Nora: “Neither Nora nor Miles is guilty.”
Miles: “The guilty person is one of Ava, Eli or Miles.”
Zoe: “Zoe is innocent.”
Random case
Solution: Eli 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.