"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 notorious BTK Serial Killer terrified a city and shocked the nation – Now, his daughter finally breaks her silence, and what she now reveals is stunning. ‘My Father BTK’ – the 20/20 documentary event at a special time – Friday at 9/8c on ABC. https://abcn.ws/2FIdrlC | ABC 20/20

TOMORROW: A serial killer's daughter breaks her silence. What she reveals about her dad - the notorious BTK Killer - is stunning. 'My Father BTK' - the 20/20 documentary event at a special time - Tomorrow at 9/8c on ABC. https://abcn.ws/2FYWFhY | ABC 20/20