Käthe von Nagy wanted to get married at the age of 16, therefore, her parents put her in the Santa Chrisitana Convent, near Vienna. After that, she worked in her father's office and besides started to secretly write short stories for newspapers. In Budapest, she studied acting, dancing and singing, but her parents were not very happy. In 1926, she went to Berlin to make movies. She got a small part in the film _Männer von der Ehe (1927)_ and _Wien, du Stadt meiner Träume (1927)_ "Vienna, City of My Dreams". In 1930, she went into talkies with Der Andere (1930). She also made the French version of "Bomben auf Monte Carlo" (1931). In the German film, Anna Sten played the part. In 1938, she played in "Finale" ("Die Unruhigen Mädchen", "Les Sourires de Vienne"). After that she made 6 films in France. Her last one was Die Försterchristl (1952), alongside Johanna Matz. She died of cancer in Hollywood.