I know that as more time goes on, without an arrest or named suspect or POI, the more likely it seems that the killer of these young people was someone completely unknown to them, but I just cannot yet make that leap. I have never had a strong sense that the killer is someone in any of their tight circles, but I have always felt, and still feel, that when the killer is identified, and I believe that they will be, it will be someone that will be recognized by someone who IS a part of some of their circles. For example, "oh yeah, that guy came into the restaurant a few times while K or X were working", or "yeah, that guy was checking K and M out at the club, and kept trying to hit on them", or "yeah xxxx knew that guy, and they had words about something", or "that guy works for xxxx, and delivered xxxx to the house", or something of the sort.
As to who may have actually been "the target", if there was one, and I believe the target was a person, and not the house, I initially had a strong sense that the target was either Kaylee or Maddie, because they were both single and attractive, and seemed to always hang out together, and then I began to think that Ethan and/or Xana were the targets, perhaps due to some animosity between one or both of them, and a third party, that perhaps boiled over at the frat party that night, as LE seems to hint that something may have happened there. Now I am back to not having any strong sense of who the target was, though I do strongly believe that at least a couple of the four who died just happened to be in the wrong place at the wrong time. I also believe that if there was any campus "Greek" connection, it would have been associated with the frat and neither of the sororities that the girls were associated with.
I hope that the investigators who have worked this case so tirelessly, since the beginning, were able to spend some down time with family and loved ones over the holiday, and get some rest, and will return to work recharged, and with the continued steely determination to find and bring this heinous murderer to justice. JMO