"The Blue Angel" is a German film released in 1930, directed by Josef von Sternberg. It stars Marlene Dietrich as a cabaret singer named Lola Lola, who captivates a conservative professor, played by Emil Jannings. The film explores themes of desire, obsession, and the clash between societal norms and personal freedom. The story follows the professor's descent into a world of decadence as he becomes infatuated with Lola. His transformation leads to his professional and personal downfall, highlighting the consequences of succumbing to temptation. "The Blue Angel" is notable for its early use of sound in cinema and remains a classic of German expressionist film.