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In Arthur Conan Doyle's story, Sherlock Holmes investigates the death of a woman in a locked room. The crime is solved by discovering a poisonous snake was used as the murder weapon, delivered through a ventilation duct from the adjacent room.

Edgar Allan Poe's story features the analytical C. Auguste Dupin who solves the mystery of two women violently killed in a room locked from the inside. The perpetrator is an escaped orangutan, who used a razor and climbed out the window.

In Gaston Leroux's novel, the young reporter Joseph Rouletabille investigates an attempted murder in a locked room. The mystery is solved when it's revealed the perpetrator hid in the room and escaped by using a secret passage.

In this story by Mary Roberts Rinehart, a murder in a locked room is investigated. The mystery gets solved by proving that the room wasn't locked at the time of the murder, but afterwards by the murderer.

Carter Dickson's novel features the detective Sir Henry Merrivale, who explains a murder that occurred in a locked room by showing that the 'locked room' had a hidden exit through the 'Judas window', a term for an arrow slit that was used as a means for the murderer to escape.

Clayton Rawson's mystery has a magician found dead in a locked room. The solution is that the murderer, who is also a magician, used a trick involving a secret compartment in the victim's magic equipment to commit the crime and get away.

Also known as 'The Three Coffins,' this book by John Dickson Carr involves a series of murders, one of which happens in a room seen to be locked from the inside. The solution involves a complex sequence of events that includes a wax dummy and a very precise timing of actions.

Written by Israel Zangwill, this novel presents a man found dead with his throat cut in a room locked from the inside. The solution: the murderer was in the room and faked a suicide, subsequently escaping by using a duplicate key.

In John Dickson Carr's mystery, a man is murdered in a locked room which seems impregnable. The trick involves a mechanical device that allows a murderer to lock the door from the outside after committing the crime.

Another Carr novel featuring Dr. Gideon Fell, who solves a poisoning that occurred in front of several witnesses. The solution hinges on the use of a trick chair and an expertly timed sleight of hand.

Written under the pseudonym Anthony Boucher, a religious fanatic is murdered in a room locked from within. The solution involves a hidden mechanism in a lamp that allows a gun to be fired remotely, creating a fake scenario of a divine smiting.