Fritz Lang Director, Screenwriter Mia May Irmgard Vanderheit Actor Hans Marr Georg Vanderheit , John Vanderheit Actor Rudolf Klein-Rogge Georgs Vetter Wil Brand Actor Loni Nest Irmgards Tochter Actor Harry Frank Actor Thea von Harbou Screenwriter Joe May Producer Guido Seeber Cinematographer Otto Hunte Art Director