Back to the Future Part III Back to the Future Part III Back to the Future Part III is a 1990 American science fiction Western comedy film and the third and final installment of the "Back to the Future" trilogy. The film was directed by Robert Zemeckis, and stars Michael J. Fox, Christopher Lloyd, Mary Steenburgen, Thomas F. Wilson and Lea Thompson. The film continues immediately following "Back to the Future Part II" (1989); while stranded in 1955 during his time travel adventures, Marty McFly (Fox) discovers that his friend Dr. Emmett "Doc" Brown, trapped in 1885, was killed by Biff Tannen's great-grandfather Buford. Marty travels
Back to the Future him to 2015 to resolve a problem with their future children. The trio board the DeLorean, which has been upgraded with hover technology, and warp to the future. Writer and producer Bob Gale conceived "Back to the Future" after he visited his parents in St. Louis, Missouri after the release of "Used Cars". Searching their basement, Gale found his father's high school yearbook and discovered he was president of his graduating class. Gale had not known the president of his own graduating class, and wondered whether he would have been friends with his father if they went to high school