"Gone Girl": Ben Affleck proclaims his innocence in first trailer

The first trailer for "Gone Girl," the film adaptation of Gillian Flynn's bestselling thriller, has arrived.

Set to a version of the song "She," the trailer follows Nick Dunne (Ben Affleck) a husband who becomes the prime suspect after his wife, Amy (Rosamund Pike) goes missing on the couple's fifth wedding anniversary.

The film is directed by David Fincher from a screenplay written by Flynn, is set for release on Oct. 3. Flynn has already said she's written an entirely new ending for the film.

Once you've watched the trailer below, you can also call the tip line shown in the video (855-4-Amy-Tips) for another "Gone Girl" treat.