Ben Affleck Looks Super Serious in First 'Gone Girl' Trailer - Watch Now!

Check out Ben Affleck in the first trailer for his highly anticipated film Gone Girl, which hits theaters on October 3!

The 41-year-old actor stars in the movie with Rosamund Pike and Neil Patrick Harris.

PHOTOS: Check out the latest pics of Ben Affleck

Gone Girl centers on a woman who mysteriously disappears on the day of her wedding anniversary, leaving many to suspect that her husband killed her.

In case you missed it, have a look at the brand new poster for Gone Girl!

WHAT DO YOU THINK of the new trailer for Gone Girl?