A crazed killer escapes from an asylum and assumes the identity of his twin brother, a famous and respected architect.
Donna Mills
as Patty Heron
Ian Hendry
as Terry Spelling / Bob Spelling
David Lodge
as Bradley
Roddy McMillan
as Inspector Fillory
Robin Parkinson
as Mr. Holland
Susan Dury
as Jenny
Christine Shaw
as Woman
Seretta Wilson
as Sara
James Greene
as Policeman
Jonathan Dennis
as Intern
Susannah MacMillan
as Dorothy
Ralph Ball
as Dr. Styles
