I'm still fixated on the keys. At the Presser yesterday Capt Palters seemed to avoid saying definitively that they were Lauren's. If they weren't, I would expect them to just say it. Possibly LE wanted to "hold back" information about the keys and the press picked up on it anyway.
Assuming that they do belong to LS, there is something wrong with the timing. Amin saw it before 3:00 AM but the video shows LS and the "mystery man in the alley after 3:00 AM. Evidentially LS "lost" her keys before then.
The "Alley video" is obviously extremely important to the case. The exact time of the recording and who she was with have been deliberately withheld. If it were to show LS with CR something is very wrong because CR should have been in bed by then. The "mystery man in the alley" is very important to the case. LE is not saying which direction they were walking in the alley. Were they leaving or returning to CR/JR's apartment building?
This opens the question of "where did LS go after she left CR/MB's apartment?" I think plenty of statements have been given to LE regarding this issue but this information is being withheld. We know there are 6 as of yet "unnamed" POI's.
I can't say with certainty that within the group of friends: CR, MB, JR and anyone else, none of them would willingly help one of the others "cover up" a murder. I still think it is very unlikely. These kids have plans for their future that don't include felony convictions.
In the back of my mind, I wonder if this could turn out to be something like the Brittany Drexel case. Brittany was probably abducted by a stranger off the street (during a time when many people were out and about) yet the investigation, at the beginning, focused on her friends.