Ian Brady and Myra Hindley met in 1961 while working at the same chemical distribution company, and quickly became extremely close. Together they enjoyed reading about Nazi history, learning about torture, and taking risqué photos of each other. Over time the couple began indulging another pastime, picking up children in thier car and driving them to an abandoned field to "help look for a lost glove". These children were never seen again.

Katherine Knight was born in 1955 and lived in Tenterfield, Australia. After dropping out of high school without having learned to read or write, Katherine was able to find employment at what she referred to as her "dream job", working at a local slaughterhouse. Katherine consistently found herself ruining her own relationships due to the abuse she would inflict on those closest to her, and this eventually culminated in one final plot for Katherine to get back at a man who refused to marry her. 

Peggy Carr was working her shift as a waitress when she suddenly felt an intense pain growing inside her stomach. Eventually, after winding up at the hospital Peggy was informed that her mysterious illness may actually have been caused on purpose, by one or more individuals holding a grudge against her. What followed turned into a months long investigation to figure out who and why someone would do such a cruel act.