CASE ZERO
Case 304

Who is guilty?

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

Ada: “The guilty person is one of Luke, Mia or Ben.”
Luke: “None of Luke, Ben or Skye is guilty.”
Mia: “The guilty person is one of Ada, Luke or Mia.”
Ben: “None of Luke, Mia or Ben is guilty.”
Skye: “The guilty person is either Ada or Mia.”
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.