CASE ZERO
Case 320

Who is guilty?

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

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