"On a stormy night, the mute servant to an ailing matriarch is stalked by a serial killer."
Dorothy McGuire
as Helen
George Brent
as Professor Warren
Ethel Barrymore
as Mrs. Warren
Kent Smith
as Dr. Parry
Rhonda Fleming
as Blanche
Gordon Oliver
as Steve Warren
Elsa Lanchester
as Mrs. Oates
Sara Allgood
as Nurse Barker
Rhys Williams
as Mr. Oates
James Bell
as Constable
Erville Alderson
as Dr. Harvey (uncredited)
Ellen Corby
as Neighbour (uncredited)
Myrna Dell
as Murder Victim (uncredited)
George Holmes
as The Killer's 'Shadow' (uncredited)
Stanley Price
as Starry-eyed Man (uncredited)
Robert Siodmak
as The Killer's 'Eye' (uncredited)
Richard Tyler
as Freddy (uncredited)
Charles Wagenheim
as Desk Clerk (uncredited)
Larry Wheat
as Minister (uncredited)
Director
Nicholas Musuraca
Director of Photography
Dore Schary
Producer
Harry Gerstad
Editor
Harry Marker
Ethel Lina White
Novel
Mel Dinelli
Screenplay
Roy Webb
Original Music Composer
Albert S. D'Agostino
Art Direction
Jack Okey
Darrell Silvera
Set Decoration
Harry Scott
Assistant Director
John L. Cass
Sound
Terry Kellum
Vernon L. Walker
Special Effects
Chris Crowell
Digital Compositor
Gordon Carveth
Stunts
C. Bakaleinikoff
Music Director
Samuel Hoffman
Musician
Edgar Peterson
Production Assistant
Fred Fleck
Production Manager
Edward Stevenson
Costume Design
