 William PowellDr. Lawrence 'Brad' Bradford | Dr. Lawrence 'Brad' Bradford |
 Jean ArthurPaula Bradford | Paula Bradford |
 James GleasonInspector Corrigan | Inspector Corrigan |
 Eric BloreStokes, Bradford's Butler | Stokes, Bradford's Butler |
 Robert ArmstrongNick Martel, Bookie | Nick Martel, Bookie |
 Lila LeeMiss Prentiss, Bradford's Receptionist | Miss Prentiss, Bradford's Receptionist |
 Grant MitchellJohn Summers, Luxury's Owner | John Summers, Luxury's Owner |
 Erin O'Brien-MooreMrs. Summers | Mrs. Summers |
 Ralph MorganLeroy Hutchins, War Cloud's Owner | Leroy Hutchins, War Cloud's Owner |
 Lucile GleasonMrs. Hutchins | Mrs. Hutchins |
 Johnny ArthurMr. Frankenstein (uncredited) | Mr. Frankenstein (uncredited) |
 Stanley BlystonePolice Radio Operator (uncredited) | Police Radio Operator (uncredited) |
 Tom BrowerPolice Sergeant (uncredited) | Police Sergeant (uncredited) |
 Spencer ChartersDr. Bunting (uncredited) | Dr. Bunting (uncredited) |
 Frankie DarroSpike Salisbury (uncredited) | Spike Salisbury (uncredited) |
 John DilsonAnalyst Examining Gelatin Capsule (uncredited) | Analyst Examining Gelatin Capsule (uncredited) |
 James DonlanTaxi Driver (uncredited) | Taxi Driver (uncredited) |
 Paul FixLou Pender (uncredited) | Lou Pender (uncredited) |
 Dorothy GrangerFill-in Receptionist (uncredited) | Fill-in Receptionist (uncredited) |
 Sam HayesRace Announcer (uncredited) | Race Announcer (uncredited) |
 Rollo LloydLandlord (uncredited) | Landlord (uncredited) |
 Edward McWadeMinister in Film (uncredited) | Minister in Film (uncredited) |
 Frank ReicherHenry Strand (uncredited) | Henry Strand (uncredited) |
 Charles RichmanMr. Curtis (uncredited) | Mr. Curtis (uncredited) |
 Syd SaylorDetective (uncredited) | Detective (uncredited) |
 John SheehanBert Murphy (uncredited) | Bert Murphy (uncredited) |
 Buster SlavenNewsboy (uncredited) | Newsboy (uncredited) |
 Al St. JohnMorgue Attendant (uncredited) | Morgue Attendant (uncredited) |
| HHenry StoneRay Torro (uncredited) | Ray Torro (uncredited) |
| BBob TansillJoe Jerino (uncredited) | Joe Jerino (uncredited) |
