Case 146
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.
Jules
“Either Lane or Parker is guilty.”
Lane
“Noah and Drew are both innocent.”
Noah
“Either Jules or Lane is guilty.”
Drew
“Parker is innocent.”
Parker
“Lane and Drew are both innocent.”
Who is guilty?
Solution: Jules
If Jules is guilty, Jules's statement is false and every other statement is true. Testing the other suspects creates at least one contradiction.