Around the exhibition of the painter George Grosz, From Berlin to New York (1912-1957), CaixaForum Palma has organized an interesting cycle of German expressionist cinema from July 18 to August 29. Der Blaue Engel (The Blue Angel) is a film directed by Josef von Sternberg in 1930. It is based on the novel Professor Unrat written by Heinrich Mann (the older brother of fellow writer Thomas Mann).