Melvyn Douglas
— Joel Sloane
Florence Rice
— Garda Sloane
Claire Dodd
— Julia Thorne
Shepperd Strudwick
— Ned Morgan
Louis Calhern
— Elias Z. Bannerman
Nat Pendleton
— Paul Terison
Douglass Dumbrille
— Arnold Stamper (as Douglas Dumbrille)
Mary Howard
— Leah Brockler
George Zucco
— Otto Brockler
Minor Watson
— Steve Langner
Donald Douglas
— Lt. James Flanner
Dwight Frye
— Sidney Z. Wheeler
Thurston Hall
— Dist. Atty. MacMillen
Horace McMahon
— Danny Scolado (as Horace MacMahon)
Barbara Bedford
— MacMillen's Secretary (uncredited)
James B. Carson
— Safe Expert (uncredited)
Jack Chefe
— Maitre d' (uncredited)
Roger Converse
— Assistant Dist. Atty. Byers (uncredited)
Jack Foss
— Attendant Bringing Sandwich (uncredited)
Natalie Garson
— Mildred, Girl with Sidney (uncredited)
Chuck Hamilton
— Police Detective (uncredited)
Edward Hearn
— Policeman (uncredited)
Harold Miller
— Auction Attendee (uncredited)
Edmund Mortimer
— Restaurant Patron (uncredited)
Wedgwood Nowell
— Man in Victim's House (uncredited)
Ronald R. Rondell
— Taxi Driver (uncredited)
Henry Sylvester
— Auctioneer (uncredited)