A rare diamond necklace vanished from a hotel suite. The maid said she found the door unlocked. The bellhop said he delivered room service hours earlier. The victim said he locked the door from the inside before sleeping. Detective Sterling checked the door frame and found the deadbolt was extended while the door was wide open. What does this prove?
The door was locked from the outside using a trick, or the victim left it open.
If a deadbolt is extended while the door is open, the door could not have been locked from the inside by someone inside the room at the time of departure, proving the lock was manipulated from the outside.
About this riddle
Detective riddles are tiny mysteries. Look for the detail in the story that does not fit; it is usually the clue that solves the case.
Difficulty: Hard. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
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