corcoran. when we interviewed these men, our crew was required to wear stab-proof vests. one of the corcoran inmates we san down with was christian knighten. nobody describes the daily pressures, the ups and downs of being a predator, like he does. >> it's seductive, you know what i mean? you can love the game, but the game loves nobody. you know what i mean? you could sit there and give it your all and think everyone's supporting you, and before you know it, just like that. get your throat cut. seen it, done it. >> knighten was serving time for murder and attempted murder. crimes he committed at the los angeles county jail while awaiting trial on an outside murder/robbery charge that he was convinced would send him to prison for life. but when he went on trial for that original murder charge, something completely unexpected happened. >> they find me not guilty, and