CASE ZERO
Case 207

Who is guilty?

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

Isla: “Neither Isla nor Cole is guilty.”
Sam: “None of Sam, Freya or Cole is guilty.”
Freya: “Neither Cole nor Eva is guilty.”
Cole: “Neither Sam nor Freya is guilty.”
Eva: “Sam is innocent.”
Random case
Solution: Isla 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.