"A man investigates the disappearance of two of his friends who were the guests of a sinister Austrian count."
Richard Greene
as Sir Ronald Burton / Richard Beckett
Boris Karloff
as Dr. Meissen
Stephen McNally
as Count Karl von Bruno
Rita Corday
as Countess Elga von Bruno
Lon Chaney Jr.
as Gargon
John Hoyt
as Count Steiken
Michael Pate
as Count Ernst von Melcher
Nancy Valentine
as Therese von Wilk
Tudor Owen
as Romley
Henry Corden
as Fender
Otto Waldis
as Innkeeper Krantz
Roy Engel
as Burgher
Leslie Denison
as Sir David Layton (uncredited)
Bernard Szold
as Koppich (uncredited)
Jack Perrin
as Hunter (uncredited)
Forrest Burns
as Guard (uncredited)
Chuck Hamilton
John Roy
Victor Romito
Nathan Juran
Director
William Alland
Producer
Jerry Sackheim
Screenplay
Irving Glassberg
Director of Photography
Russell A. Gausman
Set Decoration
Alfred Sweeney
Art Direction
Joan St. Oegger
Hairstylist
Paul Sawtell
Music
Hans J. Salter
Paul Dessau
Oliver Emert
William Lava
Bud Westmore
Makeup Artist
Frank Skinner
Joseph Gershenson
Music Director
Charles Previn
Milton Rosen
Story
Bernard Herzbrun
Russell F. Schoengarth
Editor
Joe Lapis
Sound
David S. Horsley
Visual Effects
Leslie I. Carey
Ray Romero
William Holland
Assistant Director
