From Wikipedia, the free encyclopedia Jonathan Gems (born 1952, London) is a British playwright and screenwriter mostly known for his work on Mars Attacks!, directed by Tim Burton. He also wrote the film's novelization. The son of the playwright Pam Gems, Jonathan Gems wrote a number of plays for theatres on the London fringe before gradually turning to screenwriting. As well as Mars Attacks!, Gems did uncredited rewrite work on Batman. Gems has written a number of unproduc…
