Things are looking very bad for Ben Affleck!

The actor plays Nick Dunne in the highly-anticipated film adaptation of Gillian Flynn's novel "Gone Girl" -- and the just-released trailer for the flick finds his character facing accusations he killed his own wife. 

"This man of mine may truly ... kill me," Rosamund Pike's Amy says before footage of Nick's public plea to find his wife shines a spotlight on their rocky relationship.

And when Nick has some serious trouble answering some pretty easy questions about Amy, he starts to lose the public's trust.

Director David Fincher ("The Social Network," "The Girl with the Dragon Tattoo") brings his unique aesthetic to the movie, giving the film a creepy, dark and beautiful look we can't wait to see more of.

The film opens October 3 -- will you be there opening night? Sound off below!

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