Moest was the son of the sculptor Richard Moest. He attended high school in Cologne, an art school and worked as a painter. In 1895, he began performing as an actor and opera singer on stages in
Bad Godesberg,
Hagen and other cities of West Germany. He came to Berlin in 1912 and was part of the theater at
Nollendorfplatz. In the same year he was also active as a theater director. In 1913 he married actress
Hedda Vernon. He began acting in 1914 and was part of many
comedy films. His first film as a director was
Selbstgerichtet oder Die Gelbe Fratze in which his wife Hedda Vernon was the lead actress. He served in the army during
World War I. He founded a film production company Moest-Film GmbH. In January 1922
Waldemar von Briger acquired most of the shares of the company and hence Moest resigned from the company and created Moest-Produktions GmbH. In April, 1922 after the failure of his film project he founded Aladin-Film Co. AG. In 1923, he married
Jewish Elly Charlotte Liepmann and after
Adolf Hitler imposed restrictions on Jews, Moest led a very difficult life and worked as an assistant in the company Elekta-Film in
Prague. ==Filmography==