The nature of evil is difficult to contemplate, and even harder to visualize. Movie villains often have clear motivations that are spelled out explicitly. The audience is made to understand how and why they came to be. The audience is also made to understand what their goals are, and just how they plan to go about getting them accomplished. Such rules are considered mandatory for proper storytelling. However, backstory and exposition are sometimes unnecessary. An effective villain can simply be a force of nature, with no rhyme or reason as to his existence or actions. The most horrible acts often occur without the benefit of logical explanation. The horror genre, which is a great medium for examining mankind’s collective fears, has many examples of how such characterizations can be employed to optimum effect. In 1978, writer/director John Carpenter offered a vision of evil that revealed it to be a faceless, emotionless void. It was simply titled Halloween.