William Powell
Role: Dr. Lawrence 'Brad' Bradford
Jean Arthur
Role: Paula Bradford
James Gleason
Role: Inspector Corrigan
Eric Blore
Role: Stokes, Bradford's Butler
Robert Armstrong
Role: Nick Martel, Bookie
Lila Lee
Role: Miss Prentiss, Bradford's Receptionist
Grant Mitchell
Role: John Summers, Luxury's Owner
Erin O'Brien-Moore
Role: Mrs. Summers
Ralph Morgan
Role: Leroy Hutchins, War Cloud's Owner
Lucile Gleason
Role: Mrs. Hutchins
Johnny Arthur
Role: Mr. Frankenstein (uncredited)
Stanley Blystone
Role: Police Radio Operator (uncredited)
Tom Brower
Role: Police Sergeant (uncredited)
Spencer Charters
Role: Dr. Bunting (uncredited)
Frankie Darro
Role: Spike Salisbury (uncredited)
John Dilson
Role: Analyst Examining Gelatin Capsule (uncredited)
James Donlan
Role: Taxi Driver (uncredited)
Paul Fix
Role: Lou Pender (uncredited)
Dorothy Granger
Role: Fill-in Receptionist (uncredited)
Sam Hayes
Role: Race Announcer (uncredited)
Rollo Lloyd
Role: Landlord (uncredited)
Edward McWade
Role: Minister in Film (uncredited)
Frank Reicher
Role: Henry Strand (uncredited)
Charles Richman
Role: Mr. Curtis (uncredited)
Syd Saylor
Role: Detective (uncredited)
John Sheehan
Role: Bert Murphy (uncredited)
Buster Slaven
Role: Newsboy (uncredited)
Al St. John
Role: Morgue Attendant (uncredited)
Henry Stone
Role: Ray Torro (uncredited)
Bob Tansill
Role: Joe Jerino (uncredited)
Frank M. Thomas
Role: Mike North (uncredited)