Austrian-American filmmaker, screenwriter, and occasional film producer and actor. One of the best known émigrés from Germany’s school of Expressionism, he was dubbed the “Master of Darkness” by the British Film Institute. His most famous films are the groundbreaking Metropolis (1927, the world’s most expensive silent film at the time of its release) and M (1931, M – Eine Stadt sucht einen Mörder), made before he moved to the United States, his iconic precursor to the film noir genre.
At the end of 1932, Lang started filming The Testament of Dr. Mabuse. Adolf Hitler came to power in January 1933, and by 10 March 1933, the new regime banned it as an incitement to public disorder. Testament is sometimes deemed an anti-Nazi film as Lang had put phrases used by the Nazis into the mouth of the title character. Whereas Lang was worried about the advent of the Nazi regime, partly because of his Jewish heritage, his wife and screen writer Thea von Harbou had started to sympathize with the Nazis in the early 1930s and joined the NSDAP in 1932. They soon divorced. Lang’s fears would be realized following his departure from Austria, as under the Nuremburg Laws he would be identified as a Jew even though his mother was a converted Roman Catholic, and he was raised as such.
According to Lang, propaganda minister Joseph Goebbels called Lang to his offices to inform him that The Testament of Dr Mabuse was being banned but that he was nevertheless so impressed by Lang’s abilities as a filmmaker (especially Metropolis), he was offering Lang a position as the head of German film studio UFA. Lang had stated that it was during this meeting that he had decided to leave for Paris – but that the banks had closed by the time the meeting was over. Lang has stated that he fled that very evening.
Lang left Germany in 1934 and moved to Paris. In Paris, Lang filmed a version of Ferenc Molnár’s Liliom, starring Charles Boyer. This was Lang’s only film in French (not counting the French version of Testament). He then went to the United States.
For more details, please see the Wikipedia link.
In the last decade of his life, Lang was nearly blind. He died on 2 August 1976 in Beverly Hills.

Link to Wikipedia biography