Hungarian novelist, playwright, and screenwriter. Biro began his working life as a journalist and political secretary in Budapest, before fleeing to Vienna in the wake of the 1918 October Revolution. He had a sojourn in Hollywood during the 1920's, but did his best work in Britain in the 1930's and early 40's on several classic pictures made by Alexander Korda's London Films. He also collaborated on three screenplays for Gainsborough.