Back to the Future Part III

Back to the Future Part III is a 1990 American science fiction Western film and the 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 (Lloyd), trapped in 1885, was killed by Buford "Mad Dog" Tannen (Wilson), Biff's great-grandfather. Marty travels to 1885 to rescue Doc and return once again to 1985, but matters are complicated when Doc falls in love with Clara Clayton (Steenburgen).


In 1955, moments after witnessing Emmett "Doc" Brown disappear in his DeLorean, Marty McFly learns that Doc was sent to 1885. Using information from Doc's 1885 letter, Marty and the 1955 Doc find and repair the DeLorean so Marty can return to 1985. However after finding it, Marty comes across a tombstone with Doc's name, with the inscription stating that Doc was shot by Biff Tannen's great-grandfather, Buford "Mad Dog" Tannen, six days after writing the letter.