Lothar Mendes (19 May 1894 – 25 February 1974) was a German-born screenwriter and film director. who began his career as an actor in Vienna and Berlin in Max Reinhardt's famous troupe. He went to America in the early 1920s and there he remained until 1933, directing more than a dozen features, mostly frothy comedies, while under contract to Paramount. His films included the last silent film made in America, The Four Feathers (1929) and the murder mystery Payment Deferred (1933) starring British expatriate Charles Laughton.
After Hitler ascended to power, Mendes travelled to Britain in 1934 to work at Gaumont-British Pictures, directing films with Sir Michael Balcon producing. Under that banner, he directed Jew Süss (1934) starring one of Germany's most famous emigre actors, Conrad Veidt. Mendes' Jew Suss is not to be confused with the later Nazi film of the same title (1940) which is a Reich-made, virulently anti-Semitic film that deliberately contorted the exiled German-Jewish writer, Lion Feuchtwanger's original novel of the same name, on which Mendes' film was based. Mendes' 1934 film version of Feuchtwanger's novel received strong notices at the time, and was considered an important and early film in exposing the origins of the violent anti-semitism of the then-newly empowered Nazi Party; in particular, it was praised by Albert Einstein and the Jewish American leader, Rabbi Stephen Wise, who encouraged its distribution in America under the title Power, though the film itself did not attract an audience in Depression America.
In 1936, Mendes directed his best-known film, the H.G. Wells short story, The Man Who Could Work Miracles (1936) starring Sir Ralph Richardson, for which H.G. Well himself co-wrote the adaptation. His last British film was Moonlight Sonata aka The Charmer and starred the aging piano legend Paderewski as himself; it's notable for containing rare performance footage of the legendary pianist, then in exile from his native Nazi-occupied Poland.