Adapted from the novel by Hans Koningsberger, this story of a youth who seeks social change but is unsure how to bring it about is set in a seedy and deliberately anonymous London in the context of late-60s street politics. Made the year following his breakthrough role as Joe Buck in Midnight Cowboy, Jon Voight gives a sympathetic performance as the aspiring revolutionary (known only as “A”) who is drawn to increasingly radical means. The film also features Robert Duvall as the leader of a group of union activists and Seymour Cassel as a hip, fast-talking militant.