 According to creator Mick Garris (qv), the directors involved were  given free reign as to what stories they told, however they wanted  to tell them. But when Showtime came on board, they laid out a  handful of rules. One was, there could be no full frontal male  nudity. Another was, there could be no violence committed on a child  by another child (but violence on adults by children or children on  adults was fine).