Serial killers prey on the imagination's worst fears. In real life, these murderers paralyze entire communities with their combination of ruthlessness, antisocial behavior, and the public's belief that they can and will kill again without warning. In art, however, they provide nearly endless pathways to explore the darkest corners of the human psyche.
So it's no surprise that serial killers have inspired filmmakers for decades, usually (though not always) in the horror genre. The next time you want to add fuel to your nightmares, fire up one of these movies about psychopaths, real and imagined.