Didn't wait until experts came in. the house is three stories, two bedrooms on each floor. two victims found on the second floor, two on the third floor. two other roommates were home at the time but weren't harmed. what can we learn about the attacker that bypassed the first floor, went to the second and third floor? >> if you look at the house, it is kind of a split level house. the first floor, i interpret that to be kind of a basement floor. you come in at ground level, you're on second floor. that would make sense if he's a target of opportunity or whether it was targeting a specific pers...