>>> 17-year-old demonet lewis is currently in segregation for starting a fight. lewis is one of more than 50 juveniles serving time in this adult prison. >> it's like being like a dog locked in a cage. really nothing you can do. like when i was 10 i got locked up and i got back out. when i was like 11. and i was cool. i didn't get locked up until i was 13. then 18. 13 i was out lucky. that's all my teenage life. my mom, she was always locked up, too, when i was young. i can name plenty of times when she got locked up, but that's probably part of it, but i wouldn't blame it because i do it. >> lewis is serving an 18-year sentence for robbery. >> when i first got locked up when i was 13, i was told everyone was going to come sis why it me they wasn't lying, my grandma used to tell me it's tough love. i guess that was her way of punishing me, no visits. i never even filled out a visitation list because i knew they wasn't gonna come. >> i have my nights throughout the week i'll be thinking about how much time there is over my head and stuff, and just about what thing