| Person | Type | Job | Role(s) |
|---|---|---|---|
 Clay Campbell | Crew | Costume & Make-Up | Makeup Artist |
Gene Havlick | Crew | Editing | Editor |
Helen Hunt | Crew | Costume & Make-Up | Hairstylist |
Henry Freulich | Crew | Camera | Director of Photography |
Jack A. Goodrich | Crew | Sound | Sound Engineer |
Jack Pollexfen | Crew | Writing | Story |
 Jean Louis | Crew | Costume & Make-Up | Costume Design |
 Morris Stoloff | Crew | Sound | Music Director |
Mortimer Braus | Crew | Writing | Story |
 Paul Baxley | Crew | Crew | Stunt Double |
Paul Mertz | Crew | Sound | Original Music Composer |
Paul Sawtell | Crew | Sound | Original Music Composer |
Seymour Friedman | Crew | Directing | Director |
Walter Holscher | Crew | Art | Art Direction |
William Kiernan | Crew | Art | Set Decoration |
James Nicholson | Crew | Directing | Assistant Director |
Alec Harford | Cast | Clerk (uncredited) | |
 Alexander Knox | Cast | Actor | Dr. Curtis Lanyon |
 Bruce Lester | Cast | Actor | Daniels' Reporter (uncredited) |
Carol Savage | Cast | Actress | Woman (uncredited) |
 Claire Carleton | Cast | Actress | Hazel Sorelle (uncredited) |
David Dunbar | Cast | Actor | Man in a Bar (uncredited) |
 Doris Lloyd | Cast | Actress | Lottie Sorelle (uncredited) |
 Frank Hagney | Cast | Actor | Man in a Bar (Uncredited) |
 Gavin Muir | Cast | Actor | Editor Richard Daniels |
Guy Kingsford | Cast | Actor | Nurse (uncredited) |
 Hamilton Camp | Cast | Actor | William Bennett (uncredited) |
Harry Martin | Cast | Detective (uncredited) | |
 Holmes Herbert | Cast | Actor | Constable (Uncredited) |
 Jody Lawrance | Cast | Actress | Lynn Utterson |
 Joyce Jameson | Cast | Actress | Barmaid (uncredited) |
Keith Hitchcock | Cast | Actor | Constable (uncredited) |
 Leonard Mudie | Cast | Actor | Pharmacist (Uncredited) |
Leslie Denison | Cast | Actor | Constable (uncredited) |
 Lester Matthews | Cast | Actor | Sir John Utterson |
 Louis Hayward | Cast | Actor | Edward Jekyll / Dr. Henry Jekyll / Mr. Hyde |
 Matthew Boulton | Cast | Actor | Inspector Grey (uncredited) |
 Olaf Hytten | Cast | Actor | Prosecutor (uncredited) |
 Ottola Nesmith | Cast | Actress | Nurse (uncredited) |
Patrick Aherne | Cast | Actor | Tenement Landlord (Uncredited) |
 Patrick O'Moore | Cast | Actor | Joe Sorelle (uncredited) |
 Paul Cavanagh | Cast | Actor | Inspector Stoddard |
Phyllis Morris | Cast | Actress | Tea Woman (uncredited) |
 Rhys Williams | Cast | Actor | Michaels, Butler |
 Robin Hughes | Cast | Actor | Alec (Uncredited) |
Stapleton Kent | Cast | Mr. Arnim (Uncredited) | |
Vesey O'Davoren | Cast | Utterson's Butler (uncredited) | |
 Victor Adamson | Cast | Actor | Coachman (uncredited) |
 Wheaton Chambers | Cast | Actor | Magistrate (uncredited) |
James Logan | Cast | Constable (Uncredited) | |
Betty Fairfax | Cast | Woman in Window (uncredited) | |
David Cole | Cast | Actor | Copy Boy (uncredited) |
Ola Lorraine | Cast | Woman (uncredited) | |
David Cole | Cast | Copy Boy (Uncredited) | |
Ida MacGill | Cast | Woman (uncredited) | |
Benita Booth | Cast | Woman (uncredited) | |
| Person | Type | Job | Role(s) |
