Hugh Beaumont
— Dennis O'Brien
Edward Brophy
— 'Professor' Fredrick Simpson Schicka
Richard Travis
— Inspector Bruger
Joan Valerie
— Irma Rand
Wanda McKay
— Sylvia Rand
Rebel Randall
— Gail Chase
William Tannen
— Ed Gannon
Greg McClure
— Steve Belzig alias Vic Lundy
Anthony Warde
— Bill Rafferty
Abner Biberman
— Eddie Paige
Stanley Price
— Harry Barton
A.J. Roth
— Sparring Partner
Paul Brooks
— Tom Fallon, alias Steve Rand
Richard Monahan
— Henry - the Bartender
Bing Conley
— Bookie (uncredited)
Charles Fogel
— Boxing Match Spectator (uncredited)
Joe Gilbert
— Waiter (uncredited)
Robert Lawson
— Nightclub Patron (uncredited)
Rex Moore
— Bookie (uncredited)