. >> james ray davis spent the majority of his adult life incarcerated.t, forgery, assaults. >> davis was living in a housing project on the texas/arkansas border. he had been out of prison for about ten years following a conviction for abducting a young girl. detective ramsey knocked on his door. >> i said, mr. davis, i'm from the houston police department. and you could tell his demeanor changed drastically. he just stared at me. >> ramsey pulled out a photo of diane's car. davis didn't want to look at it. >> he said, i've never, ever seen that car. well, that's strange. that's a red mustang. you've never seen a red mustang? then i pulled out a picture of diane that david had given me and i handed it to him. but he wouldn't take the picture. i tried to hand it to him, he wouldn't take it. >> davis initially denied any involvement. but when told of the fingerprint evidence, he confessed. >> i'm sorry that it happened. and i've cried and i've prayed what i did wrong. >> he had been out of prison five days when he killed diane. and his life was a lifetime