Criminal Minds Season 3 Episode 1

Reid: Could be more like a groupie. After Kenneth Bianchi was arrested, he actually convinced a woman he hardly knew to attempt a murder…

Kenneth Bianchi and his cousin, Angelo Buono, were the team of killers known as The Hillside Strangler. The two were sexual predators who killed at least 10 women in the Los Angeles area in late 1977 to early 1978, often exposing their dead bodies on the hillsides around town. After being convicted, Bianchi began corresponding with Veronica Crompton, who he convinced to commit a "copycat" crime resembling Bianchi's previous crimes in order to prove to the authorities that the real killer was still at large. Crompton failed, and she was convicted and imprisoned herself.