The Hunt For The BTK Killer blows open one of the most horrifying cases in American crime history. In 1974, a serial killer began a bloody 17-year murder spree in Kansas. Dubbing himself BTK (Bind-Torture-Kill), the elusive sex murderer taunted authorities with clues and letters. But when the brutal killings stopped the investigation stalled, with the demented murderer still at large. Then in 2004, a letter arrived at the local newspaper with a terrifying message: BTK was back! Now, a police detective must draw out the coldblooded serial killer who for years has blended into his community as a devoted husband, father and active member of his church.