The Accountant is a 2016 American crime thriller drama film directed by Gavin O'Connor. It stars Ben Affleck as Christian Wolff, a math savant who works as an accountant to uncook the books for criminal and terrorist organizations. As he navigates through his high-functioning autism, the Treasury Department becomes suspicious of his activities and starts closing in on him, leading to a rising body count. The film is praised for its gripping storyline and Affleck's performance.