had to be gavin smith's. >> i kissed my partner on the cheek. that was a big piece of evidence and when we got together and saw our entire crime scene was inside that car. >> crime scene, yes. suddenly all other theories seemed to fall away. >> the passenger seat was completely covered in blood. and at one point it was very eerie where you looked at the blood and you could see the hand mark of gavin smith as he died in that seat. >> soon the news reached gavin's family. tara was devastated. >> there's no going back from that. >> there's no going back. >> you accepted it? >> you know, you're forced. you know, trauma happens to people all the time. you don't think it's going to happen to you, but it does. >> you know, when you already expect the worst you think that you can't be shocked, but you can be. that's all i can say about that.