And a note on how these Hollywood concept theft things work...If even only one line is the same in both scripts the case is won. A playwrite successfully sued Spielberg for ET. Her one act play contained the line "ET phone home". Art Buchwald won $600k from the producers of Eddie Murphy's Coming to America on the basis of a one line idea he had written ten years earlier. The line was (paraphrase) Young African Prince comes to New York.