My Ds is nasty, he's 16 and has been difficult since sround age 3/4. From age 9/10 he's been violent especially towards his younger sister. He's broken numerous things in the house, he's also manipulative can be nice if he's after something. I'm at my wits end, I've asked for help many times from school, sure start even the police but he's good out of the home and at school. He's ruined holidays, days out and I'm aftaid my daughter will grow up thinking it's normal to be bruised by a family member. Any advice? I love and care about him but I can't wait for him to have left home although I'm scared he's going to continue this behaviour throughout his life.