Dylan O’Brien is in negotiations with CBS Films to play Mitch Rapp in American Assassin, the adaptation of the Vince Flynn bestselling novel series that Michael Cuesta will direct for CBS Films and Lionsgate. O’Brien will play the title character, who ruthlessly carries out covert counter-terrorist operations for the CIA in the book series. A deal is expected to make shortly, ending a long search for what is expected to be a star-making role. He would star alongside Michael Keaton, who signed on earlier to play Stan Hurley, a badass Cold War veteran who teaches the young assassin everything he needs to know. The idea is that O’Brien’s Mitch Rapp is college aged, and the hope is the actor grows as the series progresses.