| Person | Type | Job | Role(s) |
|---|---|---|---|
 Bernard B. Brown | Crew | Sound | Sound Supervisor |
Charles Previn | Crew | Sound | Music Director |
 Curt Siodmak | Crew | Writing | Screenplay, Story |
Frank Gross | Crew | Editing | Editor |
 Frank Skinner | Crew | Sound | Original Music Composer |
 H.G. Wells | Crew | Writing | Characters |
Hans J. Salter | Crew | Sound | Original Music Composer |
Jack Otterson | Crew | Art | Art Direction |
 Joe May | Crew | Directing | Director, Story |
John P. Fulton | Crew | Visual Effects | Visual Effects |
Ken Goldsmith | Crew | Production | Associate Producer |
Lester Cole | Crew | Writing | Screenplay |
Martin Obzina | Crew | Art | Art Direction |
 Milton Krasner | Crew | Camera | Director of Photography |
 Phil Karlson | Crew | Directing | Assistant Director |
Russell A. Gausman | Crew | Art | Set Decoration |
Vera West | Crew | Costume & Make-Up | Costume Design |
William Hedgcock | Crew | Sound | Sound Engineer |
David S. Horsley | Crew | Crew | Special Effects |
Cleo E. Baker | Crew | Visual Effects | Visual Effects |
 Alan Napier | Cast | Actor | Willie Spears |
Alexander Pollard | Cast | Footman (uncredited) | |
Barry Hays | Cast | Minor Role (uncredited) | |
 Billy Bevan | Cast | Actor | Jim (uncredited) |
Bobby Hale | Cast | Actor | Miner at Colliery (uncredited) |
 Boyd Irwin | Cast | Actor | Minor Role (uncredited) |
 Bruce Lester | Cast | Actor | Chaplain (uncredited) |
 Cecil Kellaway | Cast | Actor | Inspector Sampson |
 Cedric Hardwicke | Cast | Actor | Richard Cobb |
 Charles Brokaw | Cast | Actor | Minor Role (uncredited) |
 Chet Brandenburg | Cast | Actor | Miner at Colliery (uncredited) |
Clara Blore | Cast | Woman (uncredited) | |
 Colin Kenny | Cast | Actor | Plainclothesman (uncredited) |
 Crane Whitley | Cast | Actor | Minor Role (uncredited) |
Cyril Thornton | Cast | Actor | Policeman (uncredited) |
David Thursby | Cast | Actor | Bob (uncredited) |
Denis Tankard | Cast | Miner at Radcliffe Colliery (uncredited) | |
 Dick Johnstone | Cast | Actor | Miner at Colliery (uncredited) |
 Ed Brady | Cast | Actor | Policeman (uncredited) |
 Edmund MacDonald | Cast | Actor | Miner at Radcliffe Colliery (uncredited) |
 Edward Fielding | Cast | Actor | Prison Governor (uncredited) |
Ellis Irving | Cast | Actor | Miner at Radcliffe Colliery (uncredited) |
Eric Wilton | Cast | Actor | Fingerprint Expert (uncredited) |
 Ernie Adams | Cast | Actor | Minor Role (uncredited) |
 Forrester Harvey | Cast | Actor | Ben Jenkins |
 Frances Robinson | Cast | Actress | Clinic Nurse (uncredited) |
Frank Coletti | Cast | Minor Role (uncredited) | |
 Frank Hagney | Cast | Actor | Bill (uncredited) |
Frank Hill | Cast | Policeman (uncredited) | |
 Frank O'Connor | Cast | Actor | Constable at Coal Train (uncredited) |
 George Lloyd | Cast | Actor | Miner at Radcliffe Colliery (uncredited) |
 Harry Cording | Cast | Actor | Miner (uncredited) |
 Harry Stubbs | Cast | Actor | Constable Tewsbury (uncredited) |
Hugh Huntley | Cast | Secretary (uncredited) | |
 Ivan F. Simpson | Cast | Actor | Mr. Cotton (uncredited) |
Jack Low | Cast | Actor | Miner at Colliery (uncredited) |
 Jean Brooks | Cast | Actress | Minor Role (uncredited) |
 Jimmy Aubrey | Cast | Actor | Plainclothesman (uncredited) |
 John Sutton | Cast | Actor | Dr. Frank Griffin |
 Kit Guard | Cast | Actor | Miner at Colliery (uncredited) |
 Leyland Hodgson | Cast | Actor | Chauffeur (uncredited) |
 Louise Brien | Cast | Griffin's Secretary (uncredited) | |
 Mary Field | Cast | Actress | Passerby at Willie's House (uncredited) |
 Mary Gordon | Cast | Actress | Cookie (uncredited) |
 Matthew Boulton | Cast | Actor | Policeman (uncredited) |
 Nan Grey | Cast | Actress | Helen Manson |
Paul England | Cast | Detective (uncredited) | |
Raoul Freeman | Cast | Actor | Detective (uncredited) |
 Rex Evans | Cast | Actor | Constable Briggs (uncredited) |
Robert Robinson | Cast | Actor | Miner at Colliery (uncredited) |
Sidney Grayler | Cast | Minor Role (uncredited) | |
 Stanley Blystone | Cast | Actor | Minor Role (uncredited) |
Tom Coleman | Cast | Actor | Miner at Colliery (uncredited) |
 Vincent Price | Cast | Actor | Geoffrey Radcliffe |
Walter Bacon | Cast | Actor | Fight Spectator (uncredited) |
 William Newell | Cast | Actor | Minor Role (uncredited) |
George Hyde | Cast | Miner at Radcliffe Colliery (uncredited) | |
George Kirby | Cast | Actor | Miner at Radcliffe Colliery (uncredited) |
| Person | Type | Job | Role(s) |
