Herbert Juttke

Herbert Juttke (1897–1952) was a British-born German screenwriter who worked on around fifty film screenplays during his career. He frequently collaborated with Georg C. Klaren, working on a number of Expressonist screenplays during the silent and early sound eras. They worked on the scenario for Alfred Hitchcock's 1931 German film "Mary". Following the Nazi rise to power, Juttke emigrated to France.
Bibliography.
McGilligan, Patrick. "Alfred Hitchcock: A Life in Darkness and Light". HarperCollins, 2004.