In this movie, a Christmas boy follows well, while he is desperate because he realizes that Santa is not really real. Therefore, this young man, after he grew up, is trying to make the Christmas spirit a reality for his game, which can make a real tragedy.
Harry is played... with the kind of range & intensity more usually associated with De Niro's Travis Bickle or Joe Spinell's Frank Zito than with the blankly cartoonish Jasons, Michaels & Freddies who would come to dominate the mainstream slashers.