I know I will be stating the obvious, but I wanted to throw it out there anyway...I think at this point there are two perspectives in looking at all this information, rumors, unknowns in this case. First LE must certainly know alot, alot more information that we do or than what has been reported in MSM. As for the perspectives, I think it comes down to what scenario you are inclined to believe.
1. If SG is not connected to the SK in some way then whatever happened to her at Oak Beach is the coincidence of the century. And now you have an SK linked to four prostitutes, and an incident at Oak Beach where another prostitute is now missing that are unrelated. Also, a phone call in a similar fashion was made to her family to try and cover whatever happened to her.
2. If SG is related, and ALC went missing after SG's night at Oak Beach, which has been established clearly, I think, then the SK is unbelievably brazen, arrogant, and cocky. Think about it, whatever happened to SG was a close call for the SK, she nearly escaped. And then he has the confidence to possibly be seen at ALC's home when he picked her up and still murder her? The SK took the risk of being seen with a girl who would eventually go missing. Now granted, none of the bodies had been discovered yet, and the links to each girl were not established, but after SG, he still has the arrogance to willingly pick up an escort and murder her, presumably in his own car, in the general area of the other missing girls.
To me, like nearly everything else in this case, something doesn't add up. I've nearly given up trying to speculate on things, but what is it about this guy? Is he so confident in his abilities to go undetected and noticed? Is there something else about ALC's last night that we don't know yet? I think after SG, although it had been a few months in between, the SK would at least try to keep a low profile and not take risks like picking ALC up at home. Now maybe that's part of the fun for him, seeing how much he can really get away with, like with the phone calls, but still, something is missing for me.