Marty Stillwater is a successful mystery writer, in love with his wife, and the father of two beautiful children. His dream world is shattered when a serial killer, who is also Marty's clone, appears at his house threatening his identity and his life. The result of a biological experiment gone wrong, the clone becomes convinced that Marty has stolen his life and wants him out of the way. What follows is a horrific murderous game of cat and mouse where the clone's telepathic powers make it impossible to hide.