What goes on in the mind of a serial killer? Forensic psychologist Dr Katherine Ramsland interviews Dennis Rader, aka BTK, to learn about his psyche and his crimes. Part of True Crime on Channel 4.
Episode 1
Outliers: Dr Ramsland probes BTK's first murders: at 28, he killed four members of the Otero family
Episode 2
Unmasking Factor X: Were there any signs from Rader's childhood that would indicate he'd become a murderer?
Episode 3
Keeping Secrets: BTK disappears for eight years. But a confession may indicate he's behind unsolved crimes.
Episode 4
Walking Cesspool: In 2004, BTK resurfaces to taunt the media and police. A game of cat and mouse ensues.