. >> narrator: in order to remedy his mistake, tyler says he sends a letter to sheriff dolph bryan.he boy into his office. >> we're very interested in the truth as to what happened the night joey got killed. so if you would, would you just start over, go through the whole thing, please? and talk to the camera. if you don't mind. >> 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. >> narrator: tyler tells the sheriff about his final visit with his sister and joey, a volatile couple who often clash over kristi's infidelities. on the night of may 10, 2003, though, tyler says he notices few signs of marital strife. >> she ran up and gave him a big hug and then kristi and joe went and took a bath together. and then after that, they got out, she rubbed his back for a little while. >> narrator: but in the middle of the night, tyler says he's awoken by kristi, told to wait for her outside in her vehicle. >> i just heard that pop and kristi got in the car. >> did she tell you she shot him? is that what