And Then There Were None by Agatha Christie
"Ten... " Ten strangers are lured to an isolated island mansion off the Devon coast by a mysterious "U. N. Owen." "Nine... " At dinner a recorded message accuses each of them in turn of having a guilty secret, and by the end of the night one of the guests is dead. "Eight... " Stranded by a violent storm, and haunted by a nursery rhyme counting down one by one... as one by one... they begin to die. "Seven... " Which among them is the killer and will any of them survive?