. >> i liked having him as a cam panon.oved doing stuff with him. >> reporter: i'm sorry to make you talk about it all again. >> that's okay. in some ways it's better than keeping it bottled up. >> reporter: cody roman struck out on his own, last seen heading into this forest solo on foot. >> i love my son. i need to know what happened. i want to know. it's just not enough to imagine it. >> reporter: for nearly two years dial and his wife, peggy, searched coast sta rica for the beloved only son. >> you don't know heart break until you're running through the jungle yelling your son's name. you know? >> reporter: national geographic cameras documented it in the series "missing dial". >> being his mom, i wanted to retrace his steps. i want to see where he was. i want to see if maybe there's anything that i would see that was different, that someone else might not pick up on. >> reporter: when cody roman said he was going, his dad supported him. >> he was old style. >> reporter: apparently he was pretty good at checking in via