bryan was scared of guns. there was no way on this earth that bryan capnerhurst had a pistol. none.that gunshot to the forearm -- >> bryan had suffered a major gunshot wound to his arm. but he was still clutching the gun as he lay dead on the floor. a medical examiner testified it's unlikely the gun would have stayed in his hand. >> in my medical opinion, based on the shots to the arm, the forearm and falling over, i believe that the gun fell out of his hand. >> the gun had been placed in his hand. >> the prosecution had made its case. now it was time for the defense to fight back. >> they had no proof whatsoever that he shot his wife. it was completely circumstantial. >> the defense was about to tell the jury that bryan capnerhurst, not brett parker was the real villain. >> coming up -- brett's team produces a powerful witness to back up his story. his teenage daughter. >> i was there and i remember [crying] -- >> when "dateline" continues. " what is your glucose, and can you have more carbs? before you decide... with the freestyle libre 3 system... know your glucose and where it's