The third novel of Gillian Flynn is due out on October 3 and a new Gone Girl movie spoiler got people talking about the ending of the movie. The film tells the story of husband and wife Nick Dunne (Ben Affleck) and Amy Dunne (Rosamund Pike). During their fifth wedding anniversary, Amy disappeared and Nick became the prime suspect. There will be a lot of twist and turns in the movie adaptation that will leave the viewers both thrilled and in shock.

Gone Girl is directed by David Fincher, who is known for creating suspense and mystery flicks such as Panic Room, The Game, Fight Club, and The Social Network. So we can all expect another mind-boggling film from this genius.

His latest film was featured on the cover of Entertainment Weekly and inside was a Gone Girl movie spoiler from the author himself. Based on the report, Gillian Flynn said that what he has in mind for the ending of the film adaptation is something totally different from the book.

Flynn revealed to EW, "Ben [Affleck] was so shocked by it. He would say, 'This is a whole new third act! She literally threw that third act out and started from scratch.'" During the CinemaCon, selected viewers were treated to a preview of Affleck's new film.

Here's what some of them has to say about the Gone Girl trailer.

HitFix said, "The novel Gone Girl has a major twist. That is in no way foreshadowed in this new trailer. The bigger crux of the tease, however, is that Fincher wants to focus on the media whirlwind that surrounds and overtakes Nick."

Hollywood Reporter revealed, "Many of the scenes look very dark, with hints of noir. He [Affleck] poses with a 'missing persons' photograph of her, but then strangely smiles. Toward the end of the trailer, there's a beautiful shot of what looks like Amy's corpse underwater. Her face is cast in a green, glowing light. It's a fittingly haunting image for the very strong trailer."

I'm sure that Gone Girl movie spoiler got you all excited, huh? What do you think will be the ending of the film?