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