I have two theories regarding this case. 1. Shantina was intoxicated or otherwise impaired, drove down to water, and unfortunately they drowned. I just don't see them being on foot at this point, with dogs and a populated area they should have found them. I do feel that they should have found them by now if they were in the water as well. Given tides and currents shouldn't they be able to tell approximately where bodies would end up? Plus they should be floating by this point (sorry for the visual.) 2. Shantina knew she was lost and knocking on doors looking for directions and knocked on the wrong door. She's already shown a willingness to knock on stranger's doors late at night. Not the smartest thing, imo, but we've already established that she was somehow impaired. The reference above to the knock at 1:00am could support this theory. Whoever has or had them then drives the van to the end of the road to the beach that he knows is there, and opens some doors to stage a drowning. Neither of these theories look good for them. This one baffles me, I just feel like they shouldn't be so hard to find.