"A reporter sleuths the mystery behind an oft-married Viennese doctor whose wives met mysterious fates."
Basil Rathbone
as Dr. George Sebastian / Dr. Langamann
Ellen Drew
as Linda Booth
John Howard
as Gil Sawyer
Barbara Jo Allen
as Louise Watkins (as Barbara Allen [Vera Vague])
Ralph Morgan
as Dr. Charles Downer
Martin Kosleck
as Maurice Gretz
Kitty Kelly
as Winnie
Hugh O'Connell
as Lawrence Watkins
Henry Victor
as Furber (Uncredited)
Wanda McKay
as Girl at Charity Bazaar (Uncredited)
James Seay
as Intern (Uncredited)
William Benedict
as Mickey Barnes (Uncredited)
George Chandler
as Elevator Operator (Uncredited)
Edward Earle
as Librarian (Uncredited)
Chuck Hamilton
as Police Officer at Train Station (Uncredited)
Harry Hayden
as Ticket Clerk (Uncredited)
Douglas Kennedy
as Hotel Clerk (Uncredited)
John Laing
Charles McAvoy
as Officer Riley (Uncredited)
Howard M. Mitchell
as Butler (Uncredited)
Ruth Rogers
as Woman at Charity Bazaar (Uncredited)
Sheila Ryan
as Hostess at Charity Bazaar (Uncredited)
Hugh Sothern
as Dr. Hatch (Uncredited)
Max Wagner
as Cab Driver (Uncredited)
Hans Dreier
Art Direction
Edith Head
Costume Design
Archie Marshek
Editor
Victor Young
Original Music Composer
Robert Usher
Tim Whelan
Director
Howard J. Green
Screenplay
George M. Arthur
Producer
Gordon Jennings
Special Effects
Ted Tetzlaff
Director of Photography
Adolph Zukor
Presenter
Harry D. Mills
Sound Recordist
Stephan Pasternacki
Additional Music
A. E. Freudeman
Interior Designer
Joseph C. Youngerman
Assistant Director
John Cope
Farciot Edouart
Visual Effects