Case 259
The Disabled Camera
A security camera was deliberately switched off.
Rule: exactly one suspect is guilty. The guilty suspect lies. Every innocent suspect tells the truth.
Elliot
“Drew and Dakota are both innocent.”
Drew
“Neither Elliot nor Hayden is guilty.”
Dakota
“Hayden is innocent.”
Lane
“Elliot is guilty.”
Hayden
“Elliot and Dakota are both innocent.”
Who is guilty?
Solution: Lane
If Lane is guilty, Lane's statement is false and every other statement is true. Testing the other suspects creates at least one contradiction.