Frank Partos (born Ferenc Pártos; July 2, 1901 – December 23, 1956) was a Hungarian-American screenwriter and an early executive committee member of the Screen Actors Guild, which he helped found.
According to the ship's passenger manifest, his destination was to his stepfather Ignatz Reitzer of 214 Hope Avenue, in Passaic, New Jersey.
Thalberg decided to make Grand Hotel (1932) based on that synopsis and had Partos work as a screenwriter on the project.
In 1939 he moved to RKO Radio Pictures, where he collaborated on the early noir film Stranger on the Third Floor (1940).
[4] In 1944, he co-wrote the screenplay for The Uninvited, an early haunted house story starring Ray Milland and Gail Russell.