>> stephen smith's body was found in the middle of this road. a pathology said it appeared to be a hit and run. but the highway patrol's incident report noted they didn't find any vehicle debris, skid marks, or injuries on stephen's body consistent with someone being struck by a vehicle. according to the case notes, stephen died from blunt force trauma to the head. he had a dislocated shoulder, but there were no visible injuries on him other than a gaping head wound. sandy has never accepted her son was the victim of a hit and run. >> what do you believe happened to your son? >> i believe he was beaten to death. >> and then dropped in the road? >> and then laid in that road, hoping somebody was going to run over him. >> reporter: for sandy, much doesn't add up. she says her son would have been too afraid to walk alone in the middle of the night.