Did Marty Die (Twice?) in Back to the Future?

It's been almost 40 years, and we're still talking about the Back to the Future trilogy (now available from Universal Pictures). Robert Zemeckis and Bob Gale's twisty time-travel adventure about an ordinary 1980s teenager who hops through time remains one of the most satisfying movie experiences for many, and it's full of enough layers and unexpected swerves that we just keep going back for more.

Of course, that kind of constant re-examination invites tons of speculation, which helps explain why fan theories centered on the trilogy continue to spread across the internet. And like all fan theories, some of them get really, really dark.

https://www.syfy.com/syfy-wire/did-marty-die-twice-in-back-to-the-future