"After a road accident in Hungary, the American honeymooners Joan and Peter and the enigmatic Dr. Werdegast find refuge in the house of the famed architect Hjalmar Poelzig, who shares a dark past with the doctor."
Boris Karloff
as Hjalmar Poelzig
Bela Lugosi
as Dr. Vitus Werdegast
David Manners
as Peter Alison
Julie Bishop
as Joan Alison
Egon Brecher
as The Majordomo
Harry Cording
as Thamal
Lucille Lund
as Karen
Henry Armetta
as The Sergeant
Albert Conti
as The Lieutenant
John Carradine
as Cult Organist
John George
as Cultist (uncredited)
Albert Pollet
as Waiter (uncredited)
Edgar G. Ulmer
Story
Peter Ruric
Director
Screenplay
John J. Mescall
Director of Photography
Edgar Allan Poe
Short Story
E.M. Asher
Supervising Producer
Ray Curtiss
Editor
Costume Design
Jack Pierce
Makeup Artist
Carl Laemmle Jr.
Producer
Heinz Roemheld
Music
Charles D. Hall
Art Direction
Gilbert Kurland
Sound
Set Designer
William J. Reiter
Assistant Director
Sam Weisenthal
Tom Kilpatrick
M.F. Murphy
Production Manager
Roman Freulich
Still Photographer