Although the Back to the Future trilogy is one of the rare Hollywood franchises with a definitive ending, several spiritual sequels exist. Robert Zemeckis and Bob Gale have been adamant that there will never be a Back to the Future reboot, remake, spinoff, or sequel. This decision has preserved the trilogy’s flawless reputation, built on its airtight story and cast. Back to the Future Part III ends with Marty leaving time travel behind while Doc Brown returns with Clara and their children in a steam-powered time machine. Doc’s time-hopping adventures continue, but only off-screen. While the creators will never extend...