Case 005
The Cut Cable
A network cable was cut in a restricted room.
Rule: exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Harper
“Hayden is guilty.”
Jules
“Either Harper or Dakota is guilty.”
Dakota
“Neither Emery nor Hayden is guilty.”
Emery
“Jules is innocent.”
Hayden
“Either Harper or Jules is guilty.”
Who is guilty?
Solution: Harper
If Harper is guilty, Harper's statement is false and every other statement is true. Testing the other suspects creates at least one contradiction.