Ben Affleck ’s Christian Wolff is like if A Beautiful Mind ’s John Nash moonlit as Batman. In The Accountant 2, autism remains his superpower, granting him the ability to both crunch numbers with extraordinary speed and accuracy and to assassinate bad guys with peerless lethality.

The director and the writer of the surprisingly successful “Accountant” franchise join Affleck to discuss its origins, getting ahead in Hollywood and learning to line dance.