Charles Hutchison
— Larry Hutchdale / 'Lightning Hutch'
Edith Thornton
— Diane Winters
Sheldon Lewis
— Boris Kosloff
Eddie Phillips
— Clifford Price
Violet Schram
— Marie Bruseff
Ben Walker
— Henry
Virginia Pearson
— Janet Thornwall
Gordon Sackville
— Hugh Thornwall
LeRoy Mason
— Frank Proctor
Ethan Laidlaw
— Detective [Chs. 2-3] / Kosloff Henchman [Ch. 4 onwards] (uncredited)