It's been a massive success at the box office, making over $200 million domestically alone, and has even had a second limited cinematic release for its black and white cut, but apparently Logan was originally intended to have a very different, and much, much darker opening scene.

In a recent interview with IGN, Logan director James Mangold described how his first-draft script opened with an aged and infirm Professor Xavier accidentally killing most of the X-Men.

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“I literally had written an opening which started with that sequence, and so it was quite literal, who was dead," Mangold said. "But the reason we didn't do it wasn't to spare other films, it was that it redefined the movie. It made the movie about the X-Men, instead of being about Logan and Charles. And irrevocably, when you read the script opening that way, it became about this other tragedy, as opposed to that tragedy being something hovering like a shadow in the background for these characters.”

In the final film, Xavier's mutant massacre happens off screen before the movie begins, although there is a news report that links the character's deadly telepathic seizure at the casino hotel to a similar event that took place in Westchester, New York – the location of the X-Mansion -- and the audience is left to imagine exactly who among the X-Men had been caught in the crossfire.

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Arriving May 23 on Blu-ray and DVD, Logan stars Hugh Jackman as Logan, Patrick Stewart as Charles, Dafne Keen as Laura, Boyd Holbrook as Pierce and Stephen Merchant as Caliban.