William Powell (43)

Dr. Lawrence 'Brad' Bradford

Jean Arthur (35)

Paula Bradford

James Gleason (53)

Inspector Corrigan

Eric Blore (48)

Stokes, Bradford's Butler

Robert Armstrong (45)

Nick Martel, Bookie

Lila Lee (30)

Miss Prentiss, Bradford's Receptionist

Grant Mitchell (61)

John Summers, Luxury's Owner

Erin O'Brien-Moore (33)

Mrs. Summers

Ralph Morgan (52)

Leroy Hutchins, War Cloud's Owner

Lucile Gleason (48)

Mrs. Hutchins

Johnny Arthur (52)

Mr. Frankenstein (uncredited)

Stanley Blystone (41)

Police Radio Operator (uncredited)

Tom Brower (58)

Police Sergeant (uncredited)

Spencer Charters (61)

Dr. Bunting (uncredited)

Frankie Darro (18)

Spike Salisbury (uncredited)

John Dilson (45)

Analyst Examining Gelatin Capsule (uncredited)

James Donlan (47)

Taxi Driver (uncredited)

Paul Fix (35)

Lou Pender (uncredited)

Dorothy Granger (23)

Fill-in Receptionist (uncredited)

Sam Hayes

Race Announcer (uncredited)

Rollo Lloyd (53)

Landlord (uncredited)

Edward McWade (71)

Minister in Film (uncredited)

Frank Reicher (60)

Henry Strand (uncredited)

Charles Richman (71)

Mr. Curtis (uncredited)

Syd Saylor (41)

Detective (uncredited)

John Sheehan (50)

Bert Murphy (uncredited)

Buster Slaven (13)

Newsboy (uncredited)

Al St. John (42)

Morgue Attendant (uncredited)

Henry Stone

Ray Torro (uncredited)

Bob Tansill

Joe Jerino (uncredited)