HUH??? WHO was in that house??
From this source: TIMELINE
The two surviving roommates were in the basement and slept through the murders, police said. On the morning of Nov. 13, the two roommates called friends over to their house because they thought one of the victims on the second floor had passed out and wasn't waking up, police said. At 11:58 a.m., a 911 call from one of the roommate's phones requested help for an unconscious person, police said. The 911 caller's identity has not been released but police said "multiple people talked with the 911 dispatcher."
It doesn't make sense to me, either.