B.T.K. (2008) Inspired by the real-life serial killer, B.T.K is the gruesome story of Dennis L. Rader, a murderer who systematically tortured and killed his victims for over two decades while evading the police for over 30 years. Living a seemingly normal life as a husband, father, security officer and church president, Rader's unquenchable thirst for blood ultimately led him to commit the most horrific crimes imaginable. Shocking and full of suspense, B.T.K is a grisly journey into the nightmarish world of a deranged killer.