>> my whole world changed. i no longer had a son. >> he was the best friend i ever had. he was the best friend to anybody that he ever met. he was very easy going, very happy-go-lucky. just kind of a cool kind of kid. >> since there was no motor oil on nick's body, and oil was throughout the passenger compartment of his car, this was further proof that he wasn't inside when it crashed. at the autopsy, the pathologist found evidence that nick had been beaten. >> there were internal injuries, specifically bleeding inside the compartment of his car, this was further proof that he wasn't inside when it crashed. at the autopsy, the pathologist found evidence that nick had been beaten. >> there were internal injuries, specifically bleeding inside the neck muscles, also called strap muscle hemorrhage. that alone is a pretty good indicator of manual strangulation. there were bruises on the face. there was also blunt force injury inside the body. >> and there was water in nick's lungs, an indication that he was still breathing when he was