Case 180
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.
Frankie
“Harper and Marley are both innocent.”
Harper
“Frankie is innocent.”
Blake
“Frankie and Harper are both innocent.”
Marley
“Either Blake or Dakota is guilty.”
Dakota
“Either Frankie or Blake is guilty.”
Who is guilty?
Solution: Dakota
If Dakota is guilty, Dakota's statement is false and every other statement is true. Testing the other suspects creates at least one contradiction.