They walk a karmic tightrope, following a strict code of an eye for an eye, not an eye for your eyesight. They're committed to balancing the scale, never stacking it in a client's favor - and only those who prove to have suffered a profound loss at the hands of another will be considered. But the real threat to the group isn't being revealed to the public by a careless client or, it's mitigating their own compulsions to avenge those they've lost and revealing themselves.