. >> in 1992, robert glenn was sentenced to three years for auto theft. when we met him 15 years later at california state prison corcoran, he was still in prison. and two of his former cellmates were six feet under. glenn murdered the first one while he was still in county jail. >> i slashed his throat repeatedly. blood was everywhere. and then another inmate passed me a shank. probably about that long with a handle on it. i just started stabbing him. stabbed him about over 100 times, in the back, sides, neck. he was crying, telling me to stop. begging for me to stop. he was still alive through all of it. >> you're smiling. >> i like that. that was one of my favorite ones right there. >> he surprised me in that he had a gleefulness about him as he was discussing the violence he had committed in prison. he had this proud little smile as he was telling us these very disturbing and violent acts. >> after murdering his cellmate in jail, glenn came to prison where his predatory behavior escalated. >> while i was there for about a year, i got about 14 assault

. >> sergeant glenn robert son, from. >> massachusetts. >> sergeant john, new york. >> i will go behind. >> staff sergeant brian barnes great falls, montana sergeant first class, homer, from daytona beach, florida. >> lets play something. we will be here throughout the show. thank you so much. >> ♪ >> ♪ >> ♪ >> ♪ >> ♪ >> ♪ >> they are good. >> i apologize for eating but that is what fourth of july is all about. >> yes. >> birthplace of america. >> grilling out. >> hanging out. >> i know. >> what are you doing. >> i will tell what you you are doing. >> is there a store where everything is made in the u.s.a. right here in philly and they are only thing you sell. >> not indian. >> made in the u.s.a. >> made in the u.s.a. >> we will look at those. >> okay. [ fly buzzing ] did you know people can save over $500 when they switch to progressive? i got your nose! i got your nose right here. i know that's your thumb, grandpa. talent! learn about it! >> i feel like this is a song do you have hear when you're seeing fireworks. so if you're thinking about buying things, why don't you support local