I realized I am now looking at the case through A different prism. I just always assumed that the other people at the house that morning were relatives of the victims the girls called to come over before 911. But maybe that could be in addition to Friends or boyfriends of the survivors as well. And then that made me realize that the surviving roommates could’ve had company that night. That maybe other people were in the house that night who visited and left, or who stayed over. That really changes things I hadn't considered.
And, although it’s pretty hard to think of someone who has no history of murder previously doing this and then blending into society without acting strangely at minimum, if there is no DNA in the system, I think it is going to be very difficult unless they can prove an alibi was false. Maybe that is what K’s father was alluding to because it sure sounded like he was saying that someone‘s alibi wasn’t adding up. Is there is no DNA in the database, they’ll have to try for ancestral DNA or I’m not sure what else. I get back to my usual question which is, what does it take to establish probable cause to search a suspect‘s apartment and car. Otherwise, if it is someone who has been to the home previously, I suspect the DNA at the home would be challenged by a defense attorney. To me, it has to be that there is blood and victim‘s DNA at their apt or car that would have no reason to be there otherwise. They can’t just go in and search without probable cause. I hope that this is solved soon