Going to the police is an excellent idea. I always thought that there was a law that said that anyone working with children had to be checked out. I could be wrong. After the Boy Scout abuses came to light I thought that they tightened the laws. At the very least the police might be able to direct you on how to proceed. Certainly worth a try. If Weist gets wind of it & he's not who he says he is, then he just might disappear.