about ten minutes later, smith reloads and strikes again, hitting her in the arm. byron'sfle jams and he apologizes. >> oh, sorry about that. and she laughed at me. i just pulled out the 22 and shot her. >> investigators say a terrified and wounded haley did not laugh. they could hear her on the audio tape pleading for her life. byron shows no mercy and keeps shooting at her. >> i gave her a shot under the chin, up into the cranium. cute. i'm sure she thought she was a real pro. >> he's bragging about what he did. very proud of the fact that he killed these kids. >> with the bombshell evidence in hand, prosecutors up the charges against byron from second degree to first degree murder. >> and the jury didn't have a question because it was all recorded. they knew what happened. they could hear him like when he was shooting haley. and he's saying that while he's shooting her. i mean, it's hard to hear. >> prosecutors say smith fired a total of nine rifle and pistol shots on nick and haley. the jury takes just several hours to find byron smith guilty of the first and second de