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)