Hi! I’m new to the site and this is my first post. I’ve read almost every thread on this case through #15, as well as the media links and the rules. I apologize in advance if I violate the TOS in anyway. I value the hard work of the people who make this site great. If I make an error, please let me know what I did so I don’t make it again. Thank you!
I am a WSU alum and have always felt a kinship with the U of I. This horrific crime has really his close to home. I have some theories that I think fall in line with what others have mentioned but with a different perspective. This is all my opinion.
There have been mentions that the person (I believe it to be just one) who committed these murders is a possibly current or former student and possibly a hunter. The use of a knife requires some level of skill with a knife and the brutality of killing with a knife would indicate (to me, again my opinion) a comfort level with blood. U of I is a top agricultural school in the US and the Palouse is farm country. The university has a program in "Animal & Veterinary Science: Production" which is raising and managing animals for meat. Through this program they learn to raise, slaughter and prepare meat for sale. Someone who studied in this major would have a history of using knives to prepare cuts of meat. Producing meat from animals they helped raise. It is my opinion that the killer was in this program or worked at a cattle processing facility close by. It would provide access and familiarity with knives and blood. I am not at all saying killing an animal for meat is the same as stabbing four living, breathing, sleeping humans is the same. I'm providing this opinion on possible background of the killer and skills they may have.
As for the house, it has been referred to quite a lot as a party house. Looking through social media sites of X, K & M they have a lot of friends from X & M’s sorority who continue to keep their personal pages public. These friends' past photos indicate that the house for several years always been rented by members of their sorority many of who have now graduated.
The layout of the house (thank you to those who have posted diagrams!) is complicated with the multiple points of entry and almost circular manner in navigating to each bedroom. I believe the killer was familiar with the house. He may have been there in years past when other people in their social network lived there and developed an obsession which has been brewing. I don’t know who the target is or the triggering event, but I believe it’s someone who has been connected to this house since prior to X, K & M moving in together with the surviving roommates.