Trailer: Head Cases: Serial Killers in the Delaware Valley

Serial killer Wayne Montgomery committed 41 murders between 1979 and 2007, leaving behind an extensive video library of his life's work. Now, a new generation is carrying on Wayne's brutal legacy in a terrifying world where rules do not apply. Press play and take a trip through the mind of one of history's most prolific serial killers - and his devoted followers who are out for blood.