A businessman is stalked by his murderous twin brother, who has just been released from a mental hospital.
as Ben Ryder / Harry Ryder
as Donna Ryder
as Lt. Conde
as Det. Trelska
as Genovese
as Anthony Scarnato
as Tina
as Mr. Rafferty
as Sharon Ryder
as Jeff Ryder
as Greg Anderson
as David Sallinger
as Bud Harris
as Ollie Crandall
as Dr. Marvin Cohen
as Dr. Hollis
as Wineman
as Cathy Scarnato
as Harry Stanton
as Ernest Deems
as Vincent Malle
as Charlie
as Simon
as Oop
as Rockie
as Tommy
as Patrolman Clark
as Helen Neary
as Car Rental Clerk
as Delivery Man
as Apartment Manager
as Ski Shop Clerk
