Mystery of the Yellow Room by Gaston Leroux [republicV]

This is novel, written by the same person who created the "Phantom of the Opera" is reportedly on of the best 'locked-room' mysteries written during the 1900's, and inspired Agatha Christie to write her first book,Gaston Leroux.
This crime novel was possibly the first to involve a ‘locked room mystery’, in which an attempted murder takes place, but with no obvious way for the perpetrator to have escaped.

The sleuth is a young journalist named Joseph Rouletabille, who uses reasoning and logic to solve the crime of the scientist's daughter who is the victim of an attempted murder that takes place in a room with bars on the windows, a double-locked door, making it impossible for the perpetrator to have committed the crime and escaped.

In a 1935 novel, John Dickson Carr, the master of locked-room mysteries, declared the Yellow Room Mystery to be the 'best detective tale ever written.' it was voted the third best locked room mystery of all time