andrea canning: brett parker met directly with sheriff leon lott.heriff to the house, to show him the crime scene. leon lott: he wanted to walk me through the house to demonstrate what had happened. and after that meeting, we sat at his kitchen table. and at that point was the first time i told him i just didn't believe him. andrea canning: the sheriff was now convinced that brett was no victim. he was the mastermind of a cruel and highly unusual plot to kill his wife and frame a friend. he'd gotten away with his gambling for so many years. what else is he going to get away with? andrea canning: three months after the murders, there was startling news. news reporter: the richland county sheriff's department says parker is lying. brett parker was charged with two murders. why do you think it took so long? because they didn't have a case, is what i thought. andrea canning: as the case headed to trial, there were no witnesses. no video of the crime, and little forensic evidence pointing to either brett or bryan as the real killer. it was a high-profile