. >> in order to remedy his mistake, tyler says he sends a letter to sheriff dolph brian.days after the confession, the sheriff invites the boy into his office. >> we're very interested in the truth as to what happened the night joey got killed. if you would, start over, and go through the whole thing again, please. and talk to the camera. >> yes, sir. i thought i was about to fix everything. i was being honest. i had nothing to be ashamed of. i was saying exactly what happened. >> tyler tells the sheriff about his final visit with his sister and joey, a volatile couple, who often clashed over christie's infidelities. on the night of may 10th, 2003, though, tyler says he notices few signs of marital strife. >> she ran up and gave him a big hug and christie and joe took a bath together and then after that they got out, she -- >> he was told to wait outside in the vehicle. >> i heard the pop as christie got in the car. >> she tell you she shot him? is that what she told you? she killed him? how did she say it? tell us -- >> it was an accident. go in there and say the gun was