CNNW CNN Presents February 6, 2012
unsolved. officials believed only one man knew what happened. >> we knew he was responsible for several deaths. >> and to get answers it would take a risky, unusual plan. send a convicted drug dealer undercover into a dangerous prison to befriend and alleged serial killer. >> i'm not a serial killer hunter. i said, how am i going to do this? >> at stake, answers. >> wondering where she is. what happened. >> peace for grieving families. >> you want to find her and bring her home and you can't. >> and one man's freedom. >> you don't just turn around and give out candy and say, you're f...