By Staff Reporter (media@latinospost.com) | First Posted: Apr 15, 2014 06:13 AM EDT

The debut trailer of "Gone Girl," the film based on the novel of Gillian Flynn's has just been released by Fox.

The trailer begins with Ben Affleck addressing a crowd about his wife's disappearance and goes on to show flashes of the couple's relationships. The trailer ends with an image of a woman's corpse submerged in water and the voice of Affleck saying, "I did not kill my wife. I am not a murderer."

The background music of the entire trailer is Charles Aznavour's "She" which effectively elevates the somber and eerie feel of the film.

Time reports that the highly-anticipated film's ending will be different from the one written in the novel. Flynn, author of the novel and at the same time, the movie adaptation's screenplay author has "something totally different from the ending of her book," says Time. The outlet notes that the ending was so drastically different that Affleck was shocked by it.

During an interview with Entertainment Weekly, Flynn elaborates, "There was something thrilling about taking this piece of work that I'd spent about two years painstakingly putting together with all its eight million Lego pieces and take a hammer to it and bash it apart and reassemble it into a movie."

"Gone Girl" is directed by David Fincher, the man behind "The Girl With the Dragon Tattoo" and stars Ben Affleck and Rosamund Pike. The film follows the story of Nick Dunne, played by Affleck, a man whose wife, Amy Dunne, played by Pike, mysteriously disappears on the day of their fifth wedding anniversary. As Nick continues to search for his missing wife, he begins to learn that the investigation has slowly been shifting to him being a prime suspect.

The film "Gone Girl" hits theaters October 3 and stars other celebrities including Neil Patrick Harris, Missi Pyle, Scoot McNairy and Tyler Perry. Watch the film's trailer below.

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