>> they ask me who i run with? i run with teachers and librarians usually. i haven't found many of them yet. >> it can be even worse for the sex offender. >> i was burned with hot water out of a hot pot with baby oil and hair grease. that's a permanent scar forever. >> most of the prisons we profile on "lockup" are maximum security prisons. i mean, these are hardcore places with gang members, rapists, murderers. every once in a while we come across a fish out of water story, the guy next door, the neighbor. where you ask the question, how did this guy end up here? >> this is california state prison, corcoran. a maximum security prison that has housed some of the nation's most infamous criminals including charles manson and the founder of the mexican mafia. despite its reputation, violence