 Cedric HardwickeRichard Cobb | Richard Cobb |
 Vincent PriceGeoffrey Radcliffe | Geoffrey Radcliffe |
 Nan GreyHelen Manson | Helen Manson |
 John SuttonDr. Frank Griffin | Dr. Frank Griffin |
 Cecil KellawayInspector Sampson | Inspector Sampson |
 Alan NapierWillie Spears | Willie Spears |
 Forrester HarveyBen Jenkins | Ben Jenkins |
 Ernie AdamsMinor Role (uncredited) | Minor Role (uncredited) |
 Jimmy AubreyPlainclothesman (uncredited) | Plainclothesman (uncredited) |
| WWalter BaconFight Spectator (uncredited) | Fight Spectator (uncredited) |
 Billy BevanJim (uncredited) | Jim (uncredited) |
| CClara BloreWoman (uncredited) | Woman (uncredited) |
 Stanley BlystoneMinor Role (uncredited) | Minor Role (uncredited) |
 Matthew BoultonPoliceman (uncredited) | Policeman (uncredited) |
 Ed BradyPoliceman (uncredited) | Policeman (uncredited) |
 Chet BrandenburgMiner at Colliery (uncredited) | Miner at Colliery (uncredited) |
 Louise BrienGriffin's Secretary (uncredited) | Griffin's Secretary (uncredited) |
 Charles BrokawMinor Role (uncredited) | Minor Role (uncredited) |
 Jean BrooksMinor Role (uncredited) | Minor Role (uncredited) |
| TTom ColemanMiner at Colliery (uncredited) | Miner at Colliery (uncredited) |
| FFrank ColettiMinor Role (uncredited) | Minor Role (uncredited) |
 Harry CordingMiner (uncredited) | Miner (uncredited) |
| PPaul EnglandDetective (uncredited) | Detective (uncredited) |
 Rex EvansConstable Briggs (uncredited) | Constable Briggs (uncredited) |
| MMary FieldPasserby at Willie's House (uncredited) | Passerby at Willie's House (uncredited) |
 Edward FieldingPrison Governor (uncredited) | Prison Governor (uncredited) |
| RRaoul FreemanDetective (uncredited) | Detective (uncredited) |
 Mary GordonCookie (uncredited) | Cookie (uncredited) |
| SSidney GraylerMinor Role (uncredited) | Minor Role (uncredited) |
 Kit GuardMiner at Colliery (uncredited) | Miner at Colliery (uncredited) |
