In between playing Batman and directing his next movie, Ben Affleck took the time to star in a movie called The Accountant from director Gavin O’Connor (Warrior, Jane Got a Gun). While the title may not sound particularly scintillating, the first trailer makes it pretty clear that it was chosen ironically because the life of this mysterious accountant is not as dull as you might think. Affleck plays Christian Wolff, a brilliant mathematician who has a dark side, offering his services to various criminal organizations. This is the kind of movie that only gets made because it has an amazing script behind it, and although Bill Dubuque previously co-wrote the middling drama The Judge, the trailer does a pretty good job of selling it as something unique. The Accountant co-stars Anna Kendrick, Jon Bernthal, Alison Wright, J.K. Simmons, John Lithgow and Jeffrey Tambor and it hits theatres on Oct. 14th. Check out the trailer after the jump and see what you think.