"The Facts in the Case of M. Valdemar" is a short story by the American author Edgar Allan Poe about a mesmerist who puts a man in a suspended hypnotic state at the moment of death. An example of a tale of suspense and horror, it is also to a certain degree a hoax, as it was published without claiming to be fictional, and many at the time of publication (1845) took it to be a factual account. Poe admitted it to be a work of pure fiction in letters to his correspondents. Source: Wikipedia (en)