One of my most-anticipated films of the year is David Fincher‘s Gone Girl because it’s a new David Fincher movie, and that’s good enough for me. Ben Affleck stars as a man who becomes the lead suspect when his wife (Rosamund Pike) disappears on their fifth wedding anniversary. Trent Reznor and Atticus Ross are providing the score, which is their third collaboration with Fincher following their excellent work on The Social Network and The Girl with the Dragon Tattoo. Reznor is currently on tour promoting Nine Inch Nails’ latest album, Hesitation Marks, but he tells EW about the score, “I’ve been working on it pretty much all this year on and off during the gaps, and we’ve got a good portion of the composition in good shape,” adding, “I’ve seen the film a number of times, and we’re deep into the integration part of it. I would hope by the time we leave for Soundgarden that it’s smooth sailing. And if it isn’t, there will be a studio set up in every hotel room until it is.”

Hit the jump for more on what Reznor had to say about the film. Gone Girl opens October 3rd and also stars Tyler Perry, Kim Dickens, Patrick Fugit, Scoot McNairy, Missi Pyle, Casey Wilson, Emily Ratajkowski, and Neil Patrick Harris.

As for what audiences might see from Fincher’s adaptation, Reznor told EW, “It’s a much darker film than I was expecting. The book is not exactly uplifting or happy, but it’s a nasty film,” which is saying something when you consider some of the Nine Inch Nails’ music videos or that Reznor and Ross worked on The Girl with the Dragon Tattoo, which literally billed itself as “The Feel Bad Movie of Christmas” .