CASE ZERO
Case 272

Who is guilty?

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

Ada: “Neither Luke nor Ben is guilty.”
Luke: “Neither Ada nor Ben is guilty.”
Mia: “The guilty person is one of Ada, Luke or Skye.”
Ben: “The guilty person is either Luke or Mia.”
Skye: “The guilty person is one of Ada, Luke or Mia.”
Random case
Solution: Mia 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.