and steven parker is one of those guys who must be separated.m controlled at all times. >> i guess i'm going to go crazy. i don't know. i guess i'm going to spend the rest of my life in prison and keep doing the same things i've been doing. i don't know what else to do. until somebody kills me, i guess. i don't know. >>> next on "lockup: extended stay" -- >> life on death row was a very traumatic experience. death was definitely next. >> eight years on death row can make any inmate question his sanity. >> i feel confused, went through a mental stage where i likened to lose my mind. >>> it's been one week since terry moore stabbed another inmate over a pair of sneakers. he said a mixture of fear and anger fueled his attack. >> if you take something like shoes, they took shoes, i know who it is. the other guys in the block, they know i know. so if i don't deal with it, then that's a weak spot on my point. so they can go, okay, he's weak and we can steal the rest of his stuff and that's what was coming next eventually. it's not my first stab, not t