. >> when penitentiary of new mexico inmate david scritchfield agreed to an interview, he still wasn'thy don't you tell me how ferocious you used to be? >> i wasn't. i was just a kitty cat. i wasn't ferocious. none whatsoever. >> because you do seem to have a reputation. >> do i? someone's told you about that? >> scritchfield did eventually open up about the violent acts he committed in prison, acts which added more than a dozen years to his original 18-month sentence for burglary. >> i've stabbed officers, i've sliced officers, i've probably thrown chemical warfare on 30 people, 40 people, if not more. >> what's your nickname? >> animal. >> every staff member i asked about david scritchfield had pretty much the same thing to say. he was a threat. historically, he always attacked staff as well as other inmates. so he was a huge problem for them. >> i've been convicted of aggravated assault on peace officers probably two or three times. i fought the law and the law won. >> at first he was a very challenging interview because he was so reluctant, definitely no trust for our camera crew,

. >> when penitentiary of new mexico inmate david scritchfield agreed to an interview, he still wasn'ty don't you tell me how ferocious you used to be? >> i wasn't. i was just a kitty cat. i wasn't ferocious. none whatsoever. >> because you do seem to have a reputation. >> do i? someone's told you about that? >> scritchfield did eventually open up about the violent acts he committed in prison, acts which added more than a dozen years to his original 18-month sentence for burglary. >> i've stabbed officers, i've sliced officers, i've probably thrown chemical warfare on 30 people, 40 people, if not more. >> what's your nickname? >> animal. >> every staff member i asked about david scritchfield had pretty much the same thing to say. he was a threat. historically, he always attacked staff as well as other inmates. so he was a huge problem for them. >> i've been convicted of aggravated assault on peace officers probably two or three times. i fought the law and the law won. >> at first he was a very challenging interview because he was so reluctant, definitely no trust for our camera crew, b