Walker is an American film made in Nicaragua. It was written by Rudy Wurlitzer, the author of Two-Lane Blacktop, Pat Garrett and Billy the Kid and Candy Mountain. Wurlitzer has recently worked on a story about the Buddha for Bernardo Bertolucci. Walker is portrayed by Ed Harris, an outstanding American actor who specializes in half-charming, half-psychotic anti-heroes. Harris has also appeared in Under Fire, To Kill a Priest, Alamo Bay and The Abyss. He also played the astronaut John Glenn in The Right Stuff.