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Dennis Rader, aka BTK, confesses to 10 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, especially his own daughter.

BTK: Chasing a Serial Killer

Part 3

A new generation of law enforcement hunts the resurgent BTK, who delights in communicating with police and the media about his murders; he is finally arrested, bringing relief to Wichita -- but shock and horror to his family.

Part 2

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.

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S1 E3 | Part 3