"No Good Deed Goes Unpunished" is the thirteenth episode of the ninth season of ER. It first aired on NBC on January 30, 2003. It was written by R. Scott Gemmill and directed by Nelson McCormick. The episode has Greg Pratt dealing with another problem with his foster brother Leon when his so-called friends shot a cop during a robbery as John Carter plans to help Dr. McNulty with his clinic, but learns something about him the hard way.