I've been her caregiver for the last 15 years. She enables my brother. He drinks, steals and threatens. He does nothing to participate in anything pays no rent. He threatens me , and I feel he has done other terrible things . How do I find out background checks or find a way to investigate this after before he could possibly harm me or my mother ? any ideas. My mom avoids the topic and we argue constantly due to him emotional and mentally abusing me and mom , but mostly me and he loves it when we do argue. he also gets aggressive when he drinks . Openly he has told me he wants me to be arrested , he wants me to mess up " f"""" - up was his actual words. I have caught him in my bedroom stealing , and recently found out he was abusive physically with his ex wife. I feel he is dangerous and don't want him living with my mom and me . Just the other night he was in a mood and told me in an undertone " he was in control " I'm afraid of him and he plays it off later as if nothing happened. I cant trust him .What can I do ?