the interrogation over, krebs brings investigators to the crime scene, keeping his promise to larry hobsontionship, but it's a relationship. >> despite that relationship, hobson testifies at krebs' 2001 trial, persuading the jury to send him to death row for raping and killing the students. >> from san quentin, krebs writes christmas cards to hobson, grateful for the way he questioned him with decency and kindness. >> it just showed he respected me for the job i had to do. it's just business. >>> coming up, what's it like to be 12 years old and sitting in the interrogation chair? >> i didn't do do it. i didn't do kill my sister. i wouldn't kill her. and hearing everything from our marketing partners, the media and millions of fans on social media can be a challenge. that's why we partnered with hp to build the new nascar fan and media engagement center. hp's technology helps us turn millions of tweets, posts and stories into real-time business insights that help nascar win with our fans. ♪ we go, go, we don't have to go solo ♪ ♪ fire, fire, you can take me higher ♪ ♪ take me to the mountai

the interrogation over, krebs brings investigators to the crime scene, keeping his promise to larry hobson. >> he liked larry. it's a weird relationship, but it's a relationship. >> despite that relationship, hobson testifies at krebs' 2001 trial, persuading the jury to send the killer to death row for raping and killing the students. from san quentin, krebs writes christmas cards to hobson, grateful for the way the investigator questioned him with decency and kindness. >> it just shows that he respected me for the job i had to do. it's just business. >>> coming up -- what's it like to be 12 years old and sitting in the interrogation chair? >> i didn't do it! i didn't kill my sister. i wouldn't kill her. people wait for this promotion all year long. and now there are endless ways to love it... from crispy to spicy to savory. [ man ] you cannot make a bad choice. [ male announcer ] red lobster's endless shrimp! as much as you like, any way you like! you can have your shrimp. and you can eat it, too. [ male announcer ] try our new soy wasabi grilled shrimp or classic garlic shrimp scampi. al