It didn't take long this fall before an unsupervised house party in Brookline got a lot of teens in hot water, both at home and at school. What would you do if you came home from a night out of town to find that your unsupervised teen’s invitation to a few friends had spiraled into a full-on house party, complete with alcohol, marijuana and noticeable damage to your house?What can we do to prevent this from happening?