Eva Mason was a member of the Blacklist.
Background[]
When she was young, Eva had to watch as her mother, that suffered from Munchausen syndrome by proxy slowly poison her younger sister Chelsea to keep her ill in order to gain attention and sympathy for herself while she "took care" of her sick daughter. Chelsea eventually died due to the poisoning and Eva earned millions in a settlement for several unnecessary and harmful treatments her sister went through due to the illness inflicted to her by her own mother. Marked by this tragedy, Eva used all the money she got to build a clandestine hospital/torture chamber and started going after women that, like her own mother, poisoned their own children for attention and sympathy, one of whom was Cynthia Panabaker´s daughter in law. After abducting those women, Eva would submit them to the same poisoning and medical abuse these mothers inflicted on their children. There is no exact number to her victims, but Eva has abducted and tortured dozens of women, many of whom were left on critical condition or even died as a result of her treatment, whose corpses were left on the facility´s grounds.