Unable to control his racing thoughts, Ben is consumed by his obsessions --- especially Diana Hotchkiss, who Ben knows he can never have. When Diana is found dead outside her apartment, his infatuation drives him on a hunt to find out what happened to the love of his life. Ben soon discovers that the woman he pined for was hiding a shocking double life. And now someone is out to stop Ben from uncovering the truth about Diana's illicit affairs.