just a couple of points from a recent Nancy Grace podcast on the case maybe worth mentioning:
1) not too long ago here the question arose of whether the rum bottle (murder weapon) had actually had rum in it, because it didn’t in the police photo of it… and the podcast mentions that the bottle was found empty in the room when police arrived — thus LE photoed it as found. Whether rum had emptied out of it, or been drank in the course of the crime, or was from the get-go simply a decorative bottle usually kept in kitchen we don’t know… but again, surely the police do know, based on their Karena interviews.
2) it is stressed that Karena reports the body is cold in the 911 call, which implies that the murder happened many hours earlier, since body temp only drops a couple or few degrees per hour upon death (but depends on lots of variables)… this issue is important since no estimated time-of-death was ever officially published. This seems to discount any notion of the murder occurring later after most apt. residents had left for work or school, and coincides with the more generally held view of a murder occurring early, likely before sunrise (between KR’s departure ~4:30am and 7am, and likely closer to the 4:30 time if the body was truly cold).