“I don’t remember exactly when, but I lit the flare and ran. Only later did I learn that there were three people in the house”

In 2014, Shey Weiker announced to friends that all child molesters deserved to die. Believing that her son had been abused by her ex-brother in law, she committed arson in an act of angry vigilante justice. True Crime documentary makers, Zoe Hines and Ned Parker, discuss her Letters From A Killer.