People on Sunday (German: Menschen am Sonntag; full title Menschen am Sonntag, ein Film ohne Schauspieler. or People on Sunday: A Film Without Actors) is a 1930 German silent drama film directed by Robert Siodmak and Edgar G. Ulmer from a screenplay by Billy Wilder, based on a reportage by Curt Siodmak, Robert's younger brother. The film follows a group of residents of Berlin on a summer's day during the interwar period. Hailed as a work of genius, it is a pivotal film in the development of German cinema and Hollywood. The film features the talents of Eugen Schüfftan (cinematography), Billy Wilder (screenplay) and Fred Zinnemann (cinematography assistant).