CASE ZERO
Case 124

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 Leo, Esme or Kai.”
Leo: “The guilty person is either Chloe or Esme.”
Esme: “Esme is innocent.”
Kai: “The guilty person is one of Chloe, Esme or Nina.”
Nina: “Chloe is guilty.”
Random case
Solution: Chloe 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.