"You’re BTK." Police interrogation video shows the moment detectives hear Dennis Rader admit to being the notorious serial killer who spent decades tormenting Wichita, Kansas. Tomorrow: #ABC2020 #MyFatherBTK https://abcn.ws/2FIdrlC | ABC 20/20

The story you thought you knew, until now. BOMBSHELL confessions from Dennis Rader (BTK) are revealed in A&E’s two-night definitive documentary, BTK: Confession of a Serial Killer. Dr. Katherine Ramsland, Professor of Forensic Psychology shares revelations from her decade-long phone correspondence with Rader and exposes the truth behind the headlines as she takes you inside the mind of a serial killer. Tune in January 8th and 9th at 9pm ET/PT on A&E. #BTKConfession | Crime & Investigation on A&E