 The original treatment for "H20" by Kevin Williamson was much more  sparse on character detail and had a radically different ending. In  the place of Nancy Stephens character of Marion Whittington in the  trademark "Williamson opener", a new character was originally to be  created, "Rachel Loomis", apparently Dr. Sam Loomis daughter, who  would have the computer files on Laurie Strode/Keri Tate on her home  computer. Rachel would come home to discover her computer on, and  would swiftly be dispatched by the Shape. Also, in the climax of the  treatment, there is a massive helicopter and bus chase sequence,  culminating in the downed helicopter spinning out of control and  decapitating the Shape with its out of control rotor a la "Mission:  Impossible".