The "for better or for worse" part of the traditional wedding vow gets stretched to the breaking point in this new TV spot for David Fincher's upcoming thriller "Gone Girl."

After flashing back to a quick meet-cute between future spouses Nick (Ben Affleck) and Amy (Rosamund Pike), Amy goes missing and the questions roll in. Where is she? Was she murdered? Did Nick kill her for the insurance money? How will co-stars Neil Patrick Harris and Tyler Perry fair in such dark territory? 

Based on the bestseller by Gillian Flynn, the dim and gritty-looking "Gone" looks like it'll fit in nicely with such other feel-good Fincher flicks like "Seven," "Fight Club," "Zodiac," "The Social Network" and "The Girl With the Dragon Tattoo."

The brief clip also gives us a glimpse of co-stars Kim Dickens, Patrick Fugit and hear a snippet of Trent Reznor and Atticus Ross' score.

Watch it here:

"Gone Girl" opens October 3.

Dave Lewis has been a Los Angeles-based entertainment writer and editor for nearly ten years. Originally hailing from Minneapolis, he moved to L.A. in 1996 to attend USC, before working for various periodicals and web sites including a lengthy stint at He joined the HitFix staff in 2011.