Charles Hutchison

Larry Hutchdale / 'Lightning Hutch'

Sheldon Lewis

Boris Kosloff

Eddie Phillips

Clifford Price

Violet Schram

Marie Bruseff

Virginia Pearson

Janet Thornwall

Gordon Sackville

Hugh Thornwall

LeRoy Mason

Frank Proctor

Ethan Laidlaw

Detective [Chs. 2-3] / Kosloff Henchman [Ch. 4 onwards] (uncredited)