Man Guilty of Murder Though No Body Found

A man was convicted of murder based on a missing persons case that happened 11 years ago. No body was ever found.
I understand he probably did it. The circumstantial evidence is substantial,but I mean what ever happened to the age old adage of "no body no crime"? What if after he's imprisoned for years, maybe dies, maybe only wishes he did, maybe gets hurt, beaten, raped, whatever, in jail and then this girl turns up? What then? Does an I'm sorry work then? HELL NO! Does a monetary settlement make everything alright? HELL NO! And besides those monetary payments for wrongful imprisonment aren't that easy. The wrongly imprisoned must show "malicious prosecution". Yeah right, fat chance. I actually knew a girls years ago who disappeared. Some time later her family was asked to identify her body, which they did, and then buried her and life went on. Only problem was she "turned up" years later, married with children, so hey it happens. How a jury or court arrives at "BEYOND a REASONABLE doubt in this case is beyond me. I guess the fact that it occurs in that "red state" of Georgia has something to do with it.