 | Jon Hall als Robert Griffin |
 | Evelyn Ankers als Julie Herrick |
 | Alan Curtis als Mark Foster |
 | Leon Errol als Herbert Higgins |
 | John Carradine als Dr. Peter Drury |
 | Gale Sondergaard als Lady Irene Herrick |
 | Lester Matthews als Sir Jasper Herrick |
 | Halliwell Hobbes als Cleghorn, the butler |
 | Leyland Hodgson als Sir Frederick Travers, chief constable |
 | Cyril Delevanti als Malty Bill, shopkeeper |
 | Jimmy Aubrey als Wedderburn, the Innkeeper (uncredited) |
 | Billy Bevan als Police Sergeant (uncredited) |
 | Ted Billings als Bettor in Pub (uncredited) |
 | Lillian Bronson als Norma, the Maid (uncredited) |
 | Leonard Carey als The Police Constable (uncredited) |
 | Russell Custer als Pub Patron (uncredited) |
| Janna DeLoos als Nellie (uncredited) |
| Tom Dillon als Ned Towle, Darts Expert (uncredited) |
 | Arthur Gould-Porter als Tom Meadow (uncredited) |
| Bobby Hale als Pub Patron (uncredited) |
 | Olaf Hytten als Gray, a Cabman (uncredited) |
| Guy Kingsford als Bill (uncredited) |
 | Skelton Knaggs als Alf Perry, Cabman (uncredited) |
 | Doris Lloyd als Maud, Barmaid (uncredited) |
| William J. O'Brien als Bettor in Pub (uncredited) |
 | Beatrice Roberts als Nurse (uncredited) |
 | Grey Shadow als Grey Shadow (uncredited) |
 | Yorke Sherwood als Jim Yarrow (uncredited) |
 | Cap Somers als Pub Patron (uncredited) |
 | Dan White als Pub Patron (uncredited) |
 | Ian Wolfe als Feeney (uncredited) |
| Ford Beebe | Director |
| Saul A. Goodkind | Editor |
| Bertram Millhauser | Screenplay |
| Hans J. Salter | Original Music Composer |
| William Lava | Original Music Composer |
| Eric Zeisl | Original Music Composer |
| Milton Krasner | Director of Photography |
| John B. Goodman | Art Direction |
| Harold H. MacArthur | Art Direction |
| Russell A. Gausman | Set Decoration |
| A.J. Gilmore | Set Decoration |
| John P. Fulton | Visual Effects |
| Vera West | Costume Supervisor |
| Jane MacDonald | Adaptation |
| H.G. Wells | Characters |
| Fred Frank | Assistant Director |
| Bernard B. Brown | Sound Director |
| William Hedgcock | Sound Engineer |
| Vera West | Costume Designer |
| Hans J. Salter | Music Director |
| Ford Beebe | Associate Producer |
