After an eight-month stay in a mental hospital, a tormented man comes home to live with his sister; but a mysterious boarder may be trying to kill him.
Anthony Perkins
as Allan
Julie Harris
as Katherine
Joan Hackett
as Olive
Kent Smith
as Raymond
Robert H. Harris
as Dr. Ellins
Molly Dodd
as Inmate
Billy Bowles
as Harold Dennis
Bill Erwin
as Dr. Ames
Jeannette Howe
as Katherine - Child
Kenneth Lawrence
as Allan - Child
Trent Dolan
as Eric
