A collection of macabre mysteries, including the superlative story 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.