. >> reporter: prosecutor jesse evans. >> you look at it and say whatever the reaction is that you'reupposed to have, that ain't it. >> reporter: but what really got detectives' attention was how much ross seemed to know about children dying in hot cars. >> the worst fear for me is to leave my son in a hot car. and then, just recently, there was a vet on -- on the internet who said even if you've got your windows rolled down and regardless, you know, i'm going to show you how hot it can get in the car. >> the antennas went up on the detectives when they heard that. >> reporter: detectives weren't in the room when ross was finally reunited with leanna, but the cameras rolled. and ross showed a completely different emotion to his wife. >> you know i didn't mean to. >> i know you didn't, baby. i know you didn't. i know that. >> i didn't mean to. >> i know you didn't. >> i think my life is over. >> it's not over, baby. it's not over. >> reporter: ross pulled himself together and told leanna his story just like he'd told the police. >> i turned out of chick-fil-a, and i just went to work.