worried

I think that T is up to eyeballs in drugs.  He's become so distant - never home, very evasive even more and more.  Because he's not getting arrested and no longer are we getting calls from the high school (since he's not there anymore) - it's not in our faces - WHICH IS BEGINNING TO SCARE THE CRAP OUT OF ME.  WE ARE NOT ACTING. Counselor said he thinks that if we kick our son out - he will begin to start using heroin, that he would get worse. Well, from what our second born said - he's already toying with heroin!  I wanted so badly to hear what I heard from our counselor.  All he kept saying is that hubby and I have to be on the same page but -- he didn't tell my husband the importance of doing something.  Other counselors (that I got some advice from) tell us that we need to "act" - whatever that is.  
I want to have an intervention for him.  Something.....