He is known for having written Seven (1995), for which he earned a nomination for the BAFTA Award for Best Original Screenplay, as well as several other films, including 8mm (1999), Sleepy Hollow (1999) and many uncredited script rewrites.
Christmas Vacation director Jeremiah S. Chechik was originally chosen to direct the optioned film but he asked for a number of modifications, including the changes to the ending, particularly the removal of the head in a box scene.
[2] While the project was ongoing, Walker found other work as a screenwriter, including a short stint with HBO's television series Tales From the Crypt, as well as writing two other films, Brainscan (1994) and the novel adaptation Hideaway (1995).
However, Walker would not earn another film credit to his name for another four years, though he penned several uncredited rewrites during this period, including The Game (on which he again worked with David Fincher) and Paul W. S. Anderson's Event Horizon.
[8] Walker found other success in 1999, as he penned uncredited rewrites to the critical hits Stir of Echoes and Fight Club, now considered a cult classic.
While Burton admired Walker's original script, he hired the playwright and Academy Award-winning screenwriter Tom Stoppard to tone down the violence.
[11] After the announcement and subsequent successes of Batman Begins and Superman Returns, the film seemed to be shelved permanently, though Wolfgang Petersen, who was due to direct the feature, had continued to express his interest in the project.
[13] Walker also wrote two shorts for the BMW Films series The Hire, starring Clive Owen: Ambush, directed by John Frankenheimer, and The Follow, by Wong Kar-wai.
In Panic Room, he appears as a sleepy neighbor; in Fight Club, three detectives are named, respectively, Andrew, Kevin and Walker; and in Seven, he is the corpse near the very beginning of the movie.