Fritz Lang's M (1931) is the story of a child murderer (Peter Lorre) in Berlin during the last years of the Weimar Republic. When the police fail to capture the terror of Berlin it's up to the criminal underworld to do the job.
Robert Shaw and Malcolm McDowell are two men on the run from mysterious forces in Joseph Losey's Figures in a Landscape (1970). Adapted by Shaw from a novel by Barry England, the film is something of an artsy action movie.