The first, by George A. Romero, his wife and assistant director Chris Romero (née Forrest) and Tom Savini, reveals that almost all the cast were friends, family or local Pittsburgh volunteers (even the mall was owned by personal friends
of Romero), that the original script had a far bleaker ending (everybody dies) which was changed during the shoot because the
film was «too much fun» for it, and that the fourth
film, should it ever get made, is a larger - scale affair set in a down - town area, with lots
of action sequences and an
overarching theme of «ignoring the problem».