A collection of macabre mysteries, including the superlative story The Witness for the Prosecution... Twelve unexplained phenomena with no apparent earthly explanation... A dog-shaped gunpowder mark; an omen from `the other side`; a haunted house; a chilling seance; a case of split personalities; a recurring nightmare; an eerie wireless message; an elderly lady`s hold over a young man; a disembodied cry of `murder`; a young man`s sudden amnesia; a levitation experience; a mysterious SOS. To discover the answers, delve into the supernatural storytelling of Agatha Christie.