One of the great mavericks of cinema, John Cassavetes has earned a reputation as the godfather of American independent movies. The actor-turned-filmmaker invented a realist style of unadorned narrative films heavily influenced by documentaries. This in-depth analysis of Cassavetes’ life and work features interviews with key collaborators and ensemble regulars, and explores the making of classics like “The Killing of a Chinese Bookie,” “Opening Night” and “A Woman Under the Influence.”