Charles is noted for contributing some of the show's darker storylines and scenes. In the season two episode "The Baby Shower" Charles wrote a dream sequence in which the title character, Jerry Seinfeld, was killed. Charles's episodes also covered such controversial topics as Nazis (in "The Limo"), a psychotic stalker (in "The Opera") and a hospital patient committing suicide (in "The Bris"). A season two episode he wrote, "The Bet", concerning Elaine buying a handgun to protect herself, was never filmed because NBC, some of the cast, and the show's director felt the gun content was too provocative. Charles claimed that his writing on "Seinfeld" was heavily influenced by "Dragnet", "Superman" and Abbott and Costello.