Kelly Marcel, the screenwriter behind the Fifty Shades of Grey film, says she is unable to watch the blockbuster because the final cut was so different to her "crazy and artistic" original vision.

Kelly MarcelJamie Dornan [L] and Dakota Johnson [R] starred in Fifty Shades of Grey

Though a box-office smash, the production process was plagued by on-set clashes between original author E.L James and Marcel and director Sam Taylor Johnson. The latter walked away from the franchise bemoaning the lack of creative autonomy. 

"My heart really was broken by that process, I really mean it," she told Bret Easton Ellis's podcast. (Ellis himself had bemoaned Marcel's hiring, putting himself forward for the role) "I don't say it out of any kind of bitterness or anger or anything like that. I just don't feel like I can watch it without feeling some pain about how different it is to what I initially wrote."

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Marcel said she had plans for a non-linear reading of the novel, which were initially received with enthusiasm by Universal. However, she eventually came to realise that James would only sanction a final cut that stuck rigidly to her famously hammy dialogue.

"I didn't want the story to be linear; I wanted it to begin at the end of the film, and for us to meet in the middle," said Marcel. "So you start with the spanking, and you have these sort of flashes that go throughout the film . I wanted to take the inner goddess out, and all of Ana's inner monologue . I wanted to remove a lot of the dialogue. I felt it could be a really sexy film if there wasn't so much talking in it.

"When I delivered that script was when I realised that all of them saying, 'Yeah, absolutely this is what we want!', and, 'You can write anything you like and get crazy and artistic with it' - that was utter, utter bullshit. Rightly so. Erika was like, 'This isn't what I want it to be, and I don't think this is the film the fans are looking for .' Ultimately, Erika did have all of the control."

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