The Bourne Identity writer reflects on the first movie in the series. 2002's The Bourne Identity is an adaptation of the Robert Ludlum novel of the same name, following the story of a man who faces amnesia and is attempting to escape his assassins and regain his memory. The first film in the franchise saw a screenplay co-written by Tony Gilroy and William Blake Herron, and was directed by Doug Liman. The Bourne Identity cast included Matt Damon, Chris Cooper, Franka Potente, Clive Owen, and Brian Cox.