At this point, I would call the police, and tell them calmly, that you fear for your, and your husband's lives to the point that you are locking your bedroom door at night. You are afraid for your son's life because of his erratic behavior and that he has a history of mental illness. You tell them to come get him. And then you let them take him. You have done enough. Wash your hands before one of you gets hurt. I say this with much love and concern, good luck, I'll be thinking of you all. <3