Thank you for the responses so far 
TO answer a few questions raised:
No chance he is taking drugs - not only have we not seen any of the other signs of that, we have always either caught the money before he spent it and in the few times we didn't, we saw what he spent it on (uses it to go buy food, drinks, fishing lures - all of which he has PLENTY of at home). He most definitely gets a "high" off spending money, whether he needs the items he buys or not. In fact he was acting quite giddy before he got picked up by his mom last night - which helped connect the dots once we realized the $ was missing. We do know that this is very typical of bipolar (getting a happy high with money).
Locking things up - SO has mentioned this many times and so have I...usually we say it to each other and to him as "it really stinks to feel like we have to lock everything up if we leave the room or house..." YOu offer good suggestions that we may have to look into now.
Taking everything out of his room - this has been recommended to us before both by his previous therapist and the officers - we have done close to that before - will def consider it all the way this time
Therapy? Oh god yes, he has been seen by professionals since he was 4 or 5 years old, after he stabbed his mother in the leg with a pen when she told him "no". He was with one place for 8 years and we switched him when he reached the teen years because it seemed to have hit a wall with them. He sees a psychologist now every 2 weeks and goes to the best children's hospital in the state for his medications given by a psychiatrist. His new psychologist (going on 2 years now) is the one who added conduct disorder to his diagnosis.
Prison -sorry to hear that about your son We have already discussed that amongst ourselves and his psychologist that if nobody can reach him, then he is most likely going to end up in jail if he continues this behavior. Also, I don't know how much more can be done aboutreaching someone if they don't have empathy or a conscience...?
