here's where we house all the disciplinary detention inmates that couldn't be handled in our general population area. now we have to deal with them over here. >> the co's told us these inmates are among the most incorrigible of all inmates within the prison. and my observation was that they seemed to be lacking in the ability to restrain their impulsive behavior. >> i'm in here for cutting myself and stuff like that. getting a bunch of reports for flooding my cell and stuff like that. >> and some are in for more violent deeds. our female producer was warned to keep a safe distance from luis nieves. >> just don't get too close. >> i'm being accused of attempted murder to the staff. >> nieves is known at iowa state as the monster. he was appealing a murder conviction when we met him. >> were your victims or alleged victims mostly women or all