8 Obscure Background Movie Clues That Explained Everything

2. A Split-Second, Out-Of-Focus Shot Reveals Deckard's A Replicant - Blade Runner

Whether Deckard is a replicant or not is still one of the most hotly debated questions in sci-fi cinema, despite the Ridley Scott having come out multiple times and confirming that, yes, he is. Not that he needed to explicitly say it at all. Ever since he reedited in a deleted scene of Harrison Ford dreaming of an electric unicorn back in 1992 the ending went from being a metaphysical tease to a forceful nudge; former Blade Runner Gaff revealed, through the use of origami, he knows Deckard's true origins. But all that's not really necessary; there's a shot (present in all earlier cuts) that gives it away only an hour or so into the film.

It's established very early on that the key to telling a replicant from a human is the eyes; the eponymous detectives use an optical test to question suspected androids, while the film repeatedly gives replicant's irises a hollow red glow when viewed from a certain angle. And, what do you know, when Deckard takes a stunned Rachael back to his flat, in one slightly out-of-focus shot his eyes flash red, if anything (given Blade Runner's meticulous visuals) a more telling clue than that foil unicorn.

Some fans of the human Deckard theory like to claim that him being a replicant is merely retconning care of Scott, but this shows that it was always meant to be, at the very least, ambiguous.