Watch the trailer for a new documentary about the making of the 1985 time travel classic

By Drew Mackie
September 15, 2015 01:05 AM

To call Back to the Future timeless would not only be a cliche; it would be bad wordplay. However, the 1985 film has endured three decades better than most ’80s blockbusters have. Now, fans can get an insider’s peek into the making of the film with Back in Time, a new documentary about the time-travel classic.

Among the surprising bits revealed in just the trailer is a story from series star Michael J. Fox about sitting next to Princess Diana at the film’s premiere.

“I realize that the seat next to me is empty. And it dawns on me that Princess Diana is going to be sitting next to me,” Fox explains in an interview. “The movie starts and it occurs to me that I’m a fake yawn and an arm stretch away from being on a date with the Princess of Wales.”

It’s enough to make you wonder what kind of alternate future might have been if Fox had only made that move back in the day.

The trailer for the documentary premiered online on Monday, the same day that news broke that Fox and Christopher Lloyd would be reprising their roles from the trilogy for a new video game, Lego: Dimensions.

Back in Time will open in select theaters on Oct. 21, 2015 – a date that Back to the Future diehards will no doubt recognize as the one that Fox’s character arrives at when he travels forward in time in Back to the Future Part II.