No, there was one a number of years back. Don't remember the details, but Google should find it. No body, weapon, witness, or anything other than circumstantial evidence. And convicted.
Having a daughter, this is my constant fear. I've taught her everything about situational awareness, watching people's behavior, don't go anywhere alone, etc..but you just never know. This makes me so utterly sick for the Bobo family. And I have no idea how Shannon Christian's dad sat through that God awful trial either. And he had to do it twice.