Locked Room cases

The Heavily Guarded Cell★☆☆about 5 minThe Entrance That Showed Nothing★★☆about 5 minThe Lock That Opens in a Blackout★★☆about 5 minThe Wet Window Frame★★☆about 5 minThe Under-Floor Storage★★☆about 5 minThe Emergency Stairs★★☆about 5 minThe Key the Intruder Placed★★☆about 5 minThe Classroom Lock★☆☆about 5 minThe Room He Was Locked In★☆☆about 5 minThe Passage Above the Ceiling★★☆about 5 minThe Trick That Tripped the Breaker★★☆about 5 minThe Faked Silhouette★★☆about 5 minThe Door That Opens Only From Inside★☆☆about 5 minThe Entry Record Off by an Hour★★☆about 5 minThe Door Taken Off Its Hinges★★★about 5 minThe Cat Door★☆☆about 5 minThe Swapped Room Numbers★★☆about 5 minThe Duplicated Key★★☆about 5 minThe Recorded Snoring★★☆about 5 minThe Chimney★★☆about 5 min