and he goes, they do. what if someone asked you to risk your life? what if i shape get changed? what if i get killed? to go undercover. and one of the country s most dangerous presents. once they stepped out the door, i was on my own. they helped him catch a killer. she had such a zest for life. young girls were being murdered. i can t imagine sending my daughter off to school, and never seeing her again. and investigators needed health to get a confession. if anyone could pull it off, he would be the problem to pull it off. but this was different, he was always be a convicted felon. if it worked, he could win his freedom, if it did, it he could lose his life. they had your back? they had my back. that s what you thought? that s what i thought. hello. and welcome to dateline. jimmy kaine was a smooth talking convict serving a ten year sentence. when he was offered a deal. if he helped prosecutors pry a confession from a suspected serial k