My son has been diagnosed with as a psychopath and particularly the only person he even remotely listens to is his mother, I'm worried he will eventually commit some serious crimes?

Since my son (calling him Matt) was about 2 he showed signs of this incredibly abnormal rage, the earliest incident i remember was when he knew he wasn't allowed to play in the kitchen cupboards, I caught him pulling things out so I put the stuff back and put him in time out, as he was a two year old this didn't even hurt but he just turned around and tried to punch me repeatedly with full force and bite me like a mini nutcase, I cannot describe it properly but I've never seen a child do this before or after it was just total rage coming from a 2 year old who could hardly speak.Because both of us worked/work we put Matt child care when he was 3 but he started beating on the other children so my wife had quit her job to be a stay at home mother, Matt was much better behaved with his mother because she was not lenient with any of his bad behaviour and he knew he couldn't get away with anything with her. (Both my son and wife are stubborn but my wife is far more stubborn than Matt).Yet Matt became a terror when he went to school because he learnt that crocodile tears and using the sympathy card would get him out of trouble with his teachers and peers, he could always act well and early. I remember he had to be about 6 and tried to play this almost convincing crying scene on my wife where my wife just told him to get up and do as he was told, immediately he stopped "crying" and smiled because he knew he was caught.The older he got the worse he got from bullying people, stealing, petty crime, fighting, etc yet he was never treated badly so we couldn't understand where this was coming from, we asked him why he keeps doing this stuff and Matt said 'because it's fun'. When Matt was about 12 I found a mutilated cat in the old tank (we converted it into a type of cubby house for Matt with windows, door, and cover), at the time I assumed a dog might of killed a cat in the tank or something. However more and more dead animals started turning up like cats, dogs, birds, toads etc with their heads smashed up, limbs cut off, nails in their spine, burnt, and so on.I was freaking out because I thought some creep was putting dead animals in our yard, we asked Matt if he knew anything about it and he said he didn't. I called the police who said they would be interested because a lot of pets had been going missing in our street, my wife later told me in private she thinks Matt is doing it because she could tell he was lying when asked about it earlier. I sincerely didn't want to believe Matt was but we caught him in the act with a toad where he showed us what he was doing by cutting off the legs and hammering nails into its spine so the toad would spasm and run on its front legs, purely because he thought it was funny.Matt was immediately put into therapy and we had the cubby house torn down, while removing the door to his room. We didn't know what to do. In his mid and late teens he told the therapist he wanted to strangle me to death or poison me for trying to tell him what to do, when asked about his mother he apparently laughed and said if he killed his mother 'she'd be such a stubborn b#tch she would probably come back from the dead just to scold him'. When Matt was about 17 I came home to find him and my wife arguing like full on screaming at each other.Matt was smashing up the house and throwing things, then he went for his mother where I thought he was going to hit her but my wife stood up to him and told him if he hits her he'll end up on his backside before he would knew what happened, Matt then stopped so I thought he calmed down but he punched me in the face instead. My wife wanted me to press charges, I didn't and Matt never apologised. This apparently all occurred because my wife told him he can't go to his friend's house until after he does his homework.Matt is 19 now and because of his age he couldn't be diagnosed but we had 4 different professionals test him, 1 was unsure, 2 diagnosed him with psychopathy and 1 thinks he has BPD. Matt can at times be charming and funny, but he isn't normal and has hardly any reactions to violence or bad things. Like he never cried at funerals, wouldn't get disgusted by things that would repulse most people, etc Matt is cold and cunning, when he looks at me there is nothing to even show he cares about my existence like when I visit my nieces and nephews, you can see there's something in their face or eyes that show they care about and like you- Matt can try fake it but you can see he doesn't care or like/love anyone even as a child there was nothing positive coming from him.I'm worried he will cause some serious damage to someone and there's nothing that can be done, the only reason my wife can somewhat control him is because she can see through his lies and acting. A lot of people tell us that Matt is lovely, kind, friendly, caring, and so on young man, when people don't know Matt he could and does charm them very quickly (he can make people feel special when he wants to), even his cousins call him a 'black snake' and say they wouldn't trust him with 25 cents because he's done some horrendous things to them. I'm not sure if anything can be done or what to do. via /r/Parenting http://ift.tt/2bHgDRd