Imagine your city is terrorized by a serial killer, so you hire a security company to install an alarm. Now imagine the polite, rule-following man wiring your house is the exact monster you are trying to keep out. That was Dennis Rader, known as BTK, a husband, father, church council president and the man installing alarms for terrified Wichita families.

We explore the ultimate dual life and the psychology of a killer whose inflated ego both drove his atrocities and ultimately destroyed him. Far from a criminal mastermind, Rader was relentless but clumsy, and his desperate craving for attention is exactly what brought him down.

• The methodical 1974 Otero family murders set against the bungled attacks that shatter the evil-genius myth
• How his need for control fed his careers as a security installer and an overzealous code-e ...