LE (like me) are certain Lori was killed inside the apt. no one else could have/would have done this except Mark. All evidence points to him. No outsider would kill them in the home and then take the body away. It just isn't done.
I was hoping to find a daily archive at deseret news online to help put the pieces together but haven't found one. Nor have I heard any of Lori's friends mention what time she left the party. LE has said so far, none of the neighbors heard anything.
So, if that's the case, I think Mark may have killed her while she was dozing off/asleep? He could have hit her on the head with something like a baseball bat. Then stabbed her, and perhaps cut her body up to get it out of the apt. easier, in bags, etc. This guy is psycho, no doubt.
I don't know about drinking establishments in UT. I'm sure they have them. I don't live there. I live next door to UT. Nevada.
Nor would a "bushy-haired stranger" have cleaned the place up afterward.
Reason I asked about bars, is because I know Utah is more restrictive about drinking but I just don't know how restrictive. In my California town, even on a Sunday, if you're out driving at 2 or 3 AM, you'll see people driving home from the bars. Had that been the case where Hacking lives, it seems more likely somebody saw a guy fitting his description driving a Durango like his. (Remember the witness who saw Simpson in the white Bronco shortly after he murdered Nicole/Ron?)