UPS
Back To The Future 3's Clara Creates A Doc Brown Plot Hole
In Back to the Future Part III, the fate of Doc Brown's love interest, Clara Clayton, creates a plothole between the timelines set up within the movie. Before Marty McFly time-travels back to 1885 to save Doc, he finds a tombstone that claims Doc was shot and killed by Buford «Mad Dog» Tannen. The inscription at the bottom reads "erected in eternal memory by his beloved Clara."