Thanks for sharing this, Rivy. This case, along with The Springfield Three, has baffled me more than most singular unsolved missing persons cases for the mere fact that here, we have a young girl, her dad, and her dad's employee all going missing while on a job, and under alarming circumstances yet no real, clear answers to their fate or persons responsible to this day.
What's your leading theory, Rivy, as to what happened to them? Mine is that I believe they could have accidentally stumbled upon something illegal and were killed because of it. Maybe drugs. Or perhaps something else. That or they were led intp a trap or coincidently got killed while beong robbed by opportinistic criminals (perhaps new to their "game") who in turn freaked out and hastily went about covering their tracks (going on this, one of the two men three-more than likely Lorenzo-was forced to direct these perpetrators back the lot for the purpose of park the truck). Since Paul was not known to park the truck in the matter in which it was found, in addition to the human tissue and blood was later discovered still on the truck, would support the theory of a hurried cover up and exit.
The facts that 1) the moving truck was discovered hastily parked in a spot it normally wasn't parked in, and that 2) the lock to the front gate seemed to have been changed (inside job?) without anyone's knowledge. Oh, and again, let's not forget the piece of human scalp and blood eventually found on the truck too. If only the police took the case seriously from the start, but unfortunely, that's not what we got here.