CASE ZERO
Case 038

Who is guilty?

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

Amira: “None of Jack, Hugo or Mae is guilty.”
Jack: “The guilty person is either Amira or Tess.”
Tess: “The guilty person is one of Jack, Hugo or Mae.”
Hugo: “The guilty person is one of Jack, Tess or Mae.”
Mae: “Hugo is innocent.”
Random case
Solution: Tess 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.