. >> as a shu inmate, billy brown is confined to a solitary cell. >> 24 hours, sit in this cell. without communication, without contact from any other human besides officers. >> it's a windowless cell in a pod, and he said this incredible thing. he said, do you know how long it's been since i've seen a tree? >> the last time i saw a tree? oh, man, years, it's been years. years. it's been years since i saw a tree. one of the last time i interacted with some people? years. >> but some of the staff here believe brown earned his shu term. serving a 40-year sentence for rape, brown landed in the shu when he assaulted an officer at another prison. but shortly after arriving on the shu at wabash, brown struck again. >> you get up in the morning, you're going to come in here thinking everything's going to be okay. it's not always so. >> sergeant dan haskins was the recipient of brown's fury. >> at that time we had what we call group rec, that's where they went out to the rec pad. what the offenders wanted to do, we found out later, it was all written down what they wanted to do. they wan