Television News Showtime's 'Secret Diary of a Call Girl' to end with fourth season 06/23/2010 U.S. cable network Showtime says it has ordered a fourth and final season of its hit comedy series "Secret Diary of a Call Girl." Read More RELATED NEWS Jimmy Fallon's 'The Tonight Show' dropping to only four nights a weekAshley Tisdale announces birth of her second childSelena Gomez is a billionaire TAGS: Billie Piper Iddo Goldberg Secret Diary of a Call Girl
