Plot Synopsis

BTK: CHASING A SERIAL KILLER is a three-part documentary series that recounts the notorious killer's crimes, the decades long investigation that captured him, and the effect his brutal murders had on everyone in his orbit, especially his daughter who speaks openly about what it is like to be the daughter of a serial killer. On January 15, 1974, police arrived on the scene of the most brutal murders Wichita, Kansas had ever witnessed; four members of the same family, including a nine year old boy and an eleven year old girl. Law enforcement could not imagine that this was only the start of thirty years of terror, courtesy of Bind, Torture, Kill -- the longest running serial killer in American history. BTK claimed victims across three decades as whole generations of investigators dedicated themselves to his capture. His grisly legacy not only cut short the lives of his many victims, but left deep and lasting scars on their families. The police that hunted him and the journalists who covered him were also left deeply affected by the grim proceedings. But perhaps the people BTK traumatized the most were his own family. Investigation Discovery aired the world premiere of BTK: CHASING A SERIAL KILLER, debuting all three, one-hour episodes back to back from 9pm-Midnight ET/PT on Friday, September 4, 2020:

Part 1 (9pm): BTK announces his arrival by murdering four members of the same family. He claims more victims over several years while taunting police, then goes dark for two decades before resurfacing in 2004 after media stories claim that he'd been forgotten

Part 2 (10pm): A new generation of law enforcement hunts the resurgent BTK, who delights in communicating with police and the media about his murders while threatening new ones. He is finally arrested, bringing relief to Wichita but shock and horror to his family.

Part 3 (11pm): Dennis Rader, aka BTK, confesses to ten murders and points police to the disturbing hoard of evidence against him. The depth of his depravity is revealed, along with the lasting effect he had on those in his orbit, most especially his own daughter.