The serial killer taunts authorities by sending many communications to a WAKE TV in Wichita, Kan., during the 1970s and after re-emerging in 2004.
After his mother is strangled in an unsolved murder, devastated Jeffrey Davis receives two highly disturbing letters -- read publicly for the first time -- from the same mysterious author, who would eventually be revealed as BTK.
Detectives take viewers on a journey into the psychopath's mind by sharing examples of how BTK meticulously cataloged his fantasies and crimes.
After years of anguish, BTK's daughter, Kerri Rawson, finally speaks and writes about what it was like to learn her beloved father is actually a notorious serial killer.