Karl Gustav Vollmöller (or Vollmoeller; 7 May 1878 – 18 October 1948) was a German philologist, archaeologist, poet, playwright, screenwriter, and aircraft designer. He is most famous for the elaborate religious spectacle-pantomime The Miracle and the screenplay for the celebrated 1930 film The Blue Angel (Der blaue Engel), which made a star of Marlene Dietrich. Source: Wikipedia (en)