. >> 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. two of his former cellmates were six feet under. glenn murdered the first one while he was still in county jail. >> i sliced his throat repeatedly, blood was everywhere. and then another inmate passed me a shank, probably about that long, with a handle on it and i just started stabbing him. stabbed him over 100 times, in the back, sides, the 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 cell mate in jail, glenn came to prison where his predatory behavior escalated. >> while i was there for about a year, i got about 14 assault on

glenn, they have a few people looking or for them including this crossing guard. >> i've been here a long time. they know me. when i put my hand out, that means stop. >> reporter: robert pasqual has his own way of stopping cars. what are you looking out for? >> speed mainly. >> reporter: this it guy was speeding? had this this became a school zone meaning 25 miles per hour speed limit when children are presence. he hands out about seven speeding tickets an hour. >> new school for me. >> reporter: this is a new school for you? and you have new shoes for today? >> addison and her older sister lauren were walked to school by their mom. >> enjoy, get to know your new teacher, all the kids in your class and just get ready to learn. >> reporter: the president of the pta says they are ready for the common core curriculum. this is the second year. but not everyone's favorite subject is inside the classroom. >> i'm most excited about recess. >> recess? that was my favorite subject in school as well. >> reporter: the principal is holding a magic show to help explain all the rules of the campus. in san jose, matt keller, abc 7 news. >>> and a stanford professor is the first woma

glenn, i need to know what is happening on this very line. who am i now. >> what an actor's dream. >> incredible co-stars. a great roberte i'm like -- i get frightened watching it. in a good way, though. there is something wonderful about being chilled in an intelligent suspense. >> you're not prepared for it. you think you have it all down. and then something happens quite quickly about that. >> there are so many surprises. it doesn't go in any way that you would expect to. there are so many shocks things that occur. it was a great range to play. very strong but passion that the. >> all right. we need to talk about another part of your life. you're a huge star trek fan. >> i am. my gdad introduced me to the reruns. we used to watch them together. it was like my moral foundation. >> in a new world where you consider the best way to represent the human race. how would you behave. >> let's see how good she is. shall we? finish this phrase. from the opening credits. these are the voyages of the star ship enterprise. its five year mission, to explore strange new worlds, to seek out new life and new civilizations and -- >> t