My roommate invited a group of people that I had never met before to our house without my permission. The group had been drinking heavily and brought their own alcohol along. The average age for the group was 19 and my roommate an I are 25 and 26. I didnt know how old any of them were until they had all left the house. At some point during the night a girl and a guy from the group left my residence to have sex at a house down the street. The girl is now claiming she was raped and is pressing criminal charges against the guy. I am assuming I am liable in this situation from a civil standpoint, but how can I legally show that my roommate was responsible for the minors in the apartment without my consent? Is the owner of the apartment we rent also liable?