Hi, MBB was missing from July 2007 to December 2010. I don't know about an autopsy report, but probably. My info is taken from the bail application for Heuermann.
What looks "first timer" to me is the killer using belts - at the head, the chest/waist area and feet / ankles. At least one belt had a monogram! Plus MBB was wrapped in plastic, NOT in a camo burlap (bag).
The fact that the other three were restrained with tape at the same three locations, then wrapped or bagged in camo burlap makes me question the experience of the killer. Once he knew the need for restraint material, he decided on what would work best, then provided it at the kill site and used the same material three times. Once he knew where the bodies would be hidden he provided not just burlap, but camo burlap specifically to blend with the background.
There were hairs caught in the belt(s) on MBB, but there were also hairs in the tape on the others, so that appears to be about the same.
I think the four were killed by the same man. But for the first in the series -- does he appear to be an experienced killer?
You see, from his age, I would have expected Heuermann to have been very experienced at 43, the age he was when MBB was killed. I've thought this was a grouping from a prolific career of killing. Joel Rifkin, when interviewed about Heuermann said to look for groups of four that he himself had groups of three.
Now, though, after considering this, I'm completely unsure about when Heuermann may have started killing.
You wrote: "One burner phone per victim strikes me as reacting to almost getting caught by cell data. Heuermann had one burner phone for each Gilgo Beach victim. That alone seems sophisticated in the task of torture murder."
It does, doesn't it. But Heuermann is sloppy. When arrested he had a burner phone on him with some very incriminating searches and had even done selfies for his "dating" profiles on the burner phone. At one point, early on, he checked messages for either one of the victims' voicemail accounts or something equally incriminating from his personal cell phone and not the burner.
I'm just really, really curious why MBB was wrapped with belts and plastic, seemingly whatever was on hand, IF her killer had any experience at all? And why come up with tape and camo burlap for the next 3?
I can't make it make sense.