Walon Green Walon Green is one of the executive producers of Dragnet, the remake of the 1950s crime drama set in Los Angeles. The new show revives the fictional detectives Joe Friday and Frank Smith. Green is a veteran producer and writer of other police dramas including Hill Street Blues, NYPD Blue, as well as the dramas ER and Law & Order. Green also wrote the screenplay for the classic Warner Bros. western The Wild Bunch, directed by Sam Peckinpah. He also wrote the screenplay for a more recent western, The Hi-Lo Country.