the police aren't going to be able do anything unless you have hard evidence, but you can call someone from the Department of Human Services or something of that nature and they can get you a counselor to help out with this. they will gather the evidence you'd need if you discover you have a predator in your midst.

the boy is NINE. he has seen some troubling stuff, but if it is nipped in the bud right away and he is given the proper amount of positive attention, there shouldn't be any more reason to worry about him. however, i think it should be addressed that this issue has come up. there is a reason he's like this, and it's probably because of another family member. i think you should get everyone together and talk about it out in the open. there should never be secrets like this in a family. if you need to, you can call your equivalent to the Department of Child Services and have them send someone out to mediate everything. but this HAS to be addressed.

i have a friend who was repeatedly molested and raped by a cousin who was MUCH older than nine when it first started (my friend was 5). his cousin forced him to watch some terrible stuff, too. unfortunately, his mom never suspected anything or never asked him about it, because it kept happening until he was old enough to realize it was wrong and could stop it himself. but in the meantime he got addicted to child pornography and is now facing a prison sentence for possession of cp.

my friend didn't come out about it until recently, and he is going on 27, so has been dealing with this for 22 years. you are lucky that your little girl has told you about this now. you have to stand up for both kids and get this resolved now before it turns into something much worse. you have to assume that if you don't, no one will.