| Person | Type | Job | Role(s) |
|---|---|---|---|
 Abraham Grossman | Crew | Art | Art Direction |
Ben Pivar | Crew | Production | Producer |
Bernard B. Brown | Crew | Sound | Sound Director |
Carmen Dirigo | Crew | Costume & Make-Up | Hairstylist |
Dwight V. Babcock | Crew | Writing | Story |
Edward R. Robinson | Crew | Art | Set Decoration |
George Bricker | Crew | Writing | Writer |
 Jack Pierce | Crew | Costume & Make-Up | Makeup Artist |
 Jean Yarbrough | Crew | Directing | Director |
Joe Lapis | Crew | Sound | Sound Engineer |
John B. Goodman | Crew | Art | Art Direction |
M. Coates Webster | Crew | Writing | Writer |
Maury Gertsman | Crew | Camera | Director of Photography |
Philip Cahn | Crew | Editing | Editor |
Russell A. Gausman | Crew | Art | Set Decoration |
Vera West | Crew | Costume & Make-Up | Costume Design |
Ralph Slosser | Crew | Directing | Assistant Director |
Raymond Kessler | Crew | Crew | Dialogue Coach |
 Beatrice Roberts | Cast | Actress | Nurse (uncredited) |
 Charles Wagenheim | Cast | Actor | Pawnbroker (uncredited) |
 Donald MacBride | Cast | Actor | Police Captain M. J. Donelly |
 Frank O'Connor | Cast | Actor | Policeman at Helen's Apartment (uncredited) |
Fred Coby | Cast | Actor | Young Hal Moffet |
 James Nolan | Cast | Actor | Police Dispatcher (uncredited) |
 Jan Wiley | Cast | Actress | Virginia Rogers Scott |
 Jane Adams | Cast | Actress | Helen Paige |
Janelle Johnson Dolenz | Cast | Joan Bemis (as JaNelle Johnson) | |
 John Hamilton | Cast | Actor | Professor Cushman (uncredited) |
 Joseph Crehan | Cast | Actor | Police Commissioner Salisbury (uncredited) |
 Oscar O'Shea | Cast | Actor | Mr. Haskins - Grocer (uncredited) |
 Patrick McVey | Cast | Actor | Detective at Helen's Apartment (uncredited) |
 Peter Whitney | Cast | Actor | Police Lieutenant Gates |
 Rondo Hatton | Cast | Actor | Hal Moffet AKA 'The Creeper' |
 Tom Neal | Cast | Actor | Clifford Scott |
 Tris Coffin | Cast | Actor | Police Lieutenant / voice of radio announcer (uncredited) |
Warren Jackson | Cast | Actor | Jeweler (uncredited) |
William Ruhl | Cast | Actor | Policeman at Helen's Apartment (uncredited) |
Mary Ann Bricker | Cast | Mary Ann Obringer (uncredited) | |
| Person | Type | Job | Role(s) |
