To the best of my knowledge there was never a conviction in the Lemons case if that's the murder you're referring to.I think somehow they found the killers, but i never heard if they done any time. i dont think they did. i could be wrong though. if someone knows more about this please let us know.
As for other murders in the area Wright City was a bloody place during the 70's. I would venture to say there were several murders there that remain unsolved.