From The Grey House:
“But then you’d have to kill all the rest of them off. Do you know how many of us you would have to kill before you would actually be in charge?”
Vincent, seeing a way out of this situation, let the smallest smile touch his pursed lips. “There were about 20 when Christopher left, but it seems the list has grown smaller in the past few months. Your competition seems to have a lot of ill luck. Christopher won’t be happy if he learns you had anything to do with that.”