I think the key to solving this will be determining the motive.
Two vastly different scenarios come to mind - A) this is a random killing by a psychopath serial killer, or B) someone committed a few gruesome murders in previous months to hide the real reason Rebecca was killed.
A random serial killing is by definition a motive of it's own, not much to dissect, and we can just assume that Hood will figure out who did it sometime this season. Not much to discuss that is interesting in this case.
However, I do love a good conspiracy, and the second option opens the door to so many juicy possibilities of motives. Let's just spitball a few out here...
Rebecca was possibly pregnant with someone's baby that didn't want that known. A Kai Proctor love child springs to mind, but it ain't like she never slept with others. The large gaping hole in her torso may be to remove the evidence.
The drug business is noted for violence, she may have been side stepping Uncle Kai's distribution network (again) and ran afoul of the competition OR ran afoul of Proctor or someone in his network (oh, hello Burton). Kai did buy a new house because he wanted a more secure location for them to live at.
Another possibility is that she had some information or evidence of some sorts that someone really needed to keep quiet. This makes sense to me mainly because of Kai's dinner time reaction to her death. He pushes his plate to the floor and trashes Rebecca's room. He wasn't so much trashing it as he was searching it, for what I don't know, but it has to be small enough to fit in her dresser drawer.
Now a lot of these motives point to a Kai Proctor involved murder. One has to ask, why is he offering Hood information if he's involved? Who knows, it might be just another psychotic Banshee resident doing their thing.
Does anyone know if Johan Lambrect (Amish teacher, Kai's dental patient) had any kin?
