CASE ZERO
Case 332

Who is guilty?

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

Chloe: “The guilty person is one of Esme, Kai or Nina.”
Leo: “Nina is innocent.”
Esme: “The guilty person is one of Leo, Esme or Kai.”
Kai: “None of Leo, Kai or Nina is guilty.”
Nina: “Chloe is innocent.”
Random case
Solution: Kai 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.