Career
Merzbach worked in the Ausrian and Germany film industries during the early stages of his career. He worked initially on scripts, but in 1924 he directed his first film. During the late 1920s, Merzbach worked in Sweden before returning to Germany.
Following the Nazi rise to power in 1933, Merzbach went into exile in Britain.
He worked in the British film industry for the remainder of his career. His final contribution was the screenplay for, directed by Lance Comfort.