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