he was gone. >> after nine years, knighton made a shocking career move. he retired. through a process called debriefing, he shared his gang secrets with authorities and was transferred to the prison's protective custody program. knighton will most likely spend the rest of his prison term in protective custody, knowing he will always have a target on his back. so now, the once-dedicated warrior, tries to focus his energy on spirituality. >> that's one thing i struggle with now. i understand the hypocrisy of my words, speaking to you right now, because if you believe all this and know it's wrong, yeah, hey, i got some atonement, i guess you could say, to make up for it. things are looking rough. >> would you kill someone today? >> oh, yeah. yeah, sure. >> you didn't hesitate, christian. >> you want me to lie? >> no. >> and pretend, you know what i mean? yeah, yeah. >>> next on "lockup:raw" -- >> i sliced his throat repeatedly. blood was everywhere. >> an inmate targets one of his cellnt mates. >> that was one of my favorite ones right there. and stole her hard earned m