A San Francisco private eye finds himself under suspicion while investigating a prizefighter's murder.
| Actor | Role |
|---|---|
 Hugh BeaumontDennis O'Brien | Dennis O'Brien |
 Edward Brophy'Professor' Fredrick Simpson Schicka | 'Professor' Fredrick Simpson Schicka |
 Richard TravisInspector Bruger | Inspector Bruger |
 Joan ValerieIrma Rand | Irma Rand |
 Wanda McKaySylvia Rand | Sylvia Rand |
 Rebel RandallGail Chase | Gail Chase |
 William TannenEd Gannon | Ed Gannon |
 Greg McClureSteve Belzig alias Vic Lundy | Steve Belzig alias Vic Lundy |
 Anthony WardeBill Rafferty | Bill Rafferty |
 Abner BibermanEddie Paige | Eddie Paige |
 Stanley PriceHarry Barton | Harry Barton |
| AA.J. RothSparring Partner | Sparring Partner |
| PPaul BrooksTom Fallon, alias Steve Rand | Tom Fallon, alias Steve Rand |
| RRichard MonahanHenry - the Bartender | Henry - the Bartender |
| BBing ConleyBookie (uncredited) | Bookie (uncredited) |
| CCharles FogelBoxing Match Spectator (uncredited) | Boxing Match Spectator (uncredited) |
| JJoe GilbertWaiter (uncredited) | Waiter (uncredited) |
| RRobert LawsonNightclub Patron (uncredited) | Nightclub Patron (uncredited) |
| RRex MooreBookie (uncredited) | Bookie (uncredited) |