facility also houses richard ramirez, better known as the night stalker, and richard allen davis, polly klaas' killer. the prison is more than 150 years old. the walls are crumbling. and the institution is outdated, contributing to an overwhelming increase in both the number and severity of brutal assaults by inmates. during the next hour, you will witness life inside san quentin, including a look inside california's vicious death row. >> san quentin opened in 1852 and today, seems physically trapped in the century in which it was conceived. old and decrepit, san quentin is riddled with shadowy alcoves and blind spots. there are no electrified, lethal fences. the towers around the perimeter must still be staffed where, incredibly, there are fewer surveillance cameras than a single convenience store. and worse yet, a lack of modernization has put officers in constant risk of inmate attack. >> every day i walk through those gates, the thought crosses my mind. is today going to be the last? >> the grounds are a sprawling 432 acres located on the shores of beautiful san francisco bay. >> customer

take 12-year-old polly klaas.er home when a man entered her bedroom and kidnapped her at knife point. tragically she was found dead two months late. this was a story that grabbed national attention and drove this man on a national kr crusade. mark klaas. good morning to you. we have spoken many times over the years. as i mention hit does not usually end like this. i want to get an understanding from you as to how an abductor in this case, this 52-year-old suspect, how he can scare these women so deeply that they don't make a move for almost a decade. how is that possible? >> well, let's remember, bill, in two of these cases, these weren't women when they were taken, they were girls. and so you're looking at a context of a determined predator and a young girl. they use threats, they use intimidation, they use coercion, they may usury straeupbts, they mause use restraints. they may torture them. there is certainly sexual assaults going on. i wouldn't be surprised if we found in this house secret rooms or caves or so

we'll talk with the father of kidnap and murder victim polly klaas coming up. >>> and another shocking case. the official in charge of the sexual assault prevention program in the air force arrested himself for allegedly groping a woman. his arrest coming as the military is grappling with sexual assaults in the ranks. we'll talk with kristen gillibrand. [ giada ] why did i switch to natural instincts? it's healthier, ammonia-free. and with aloe, vitamin e, and coconut oil, my hair looks healthier than before i colored. i switched. you should too, to natural instincts. accomplishing even little things can become major victories. i'm phil mickelson, pro golfer. when i was diagnosed with psoriatic arthritis, my rheumatologist prescribed enbrel for my pain and stiffness, and to help stop joint damage. [ male announcer ] enbrel may lower your ability to fight infections. serious, sometimes fatal events including infections, tuberculosis, lymphoma, other cancers, nervous system and blood disorders, and allergic reactions have occurred. before starting enbrel, your doctor should test you for

joining me is marc klaas, whose 12-year-old daughter polly was abducted from her bedroom in 1993. mr. klaas, thank you so much for joining me. this is a really extraordinary story, isn't it? >> it really is. it's reminiscent of a couple other stories in the modern era as well. first, it's reminiscent a little of the elizabeth smart story. she was found nine months after she disappeared. but then i think even more so would be the shawn horbuck and hornby story. shawn went missing in 2002 and was recovered alive with ben in 2007, then of course jaycee dugard who was missing for 18 years. every time one of these cases occurs and children are recovered after decades, i believe it gives hope to the family of every missing person in america. >> how does it make you feel, having been through something like this as a parent, when you hear about something like this? >> i'm overjoyed. because much of my work is looking for missing children, and we come up short time and time and time again. either we find the remains of a poor child that's been gone for a long time or we find absolutely noth

. >> reporter: klaas became an advocate for missing children after his 12-year-old daughter, polly, was kidnapped and murdered in petaluma in 1993. the case gained national attention and helped change the way police look for missing children. >> in 1993, not one law enforcement agency in the united states had a missing child protocol. now virtually every law enforcement agency in the united states has some kind of a protocol to follow in these types of situations. back in 1993, the amber alert was not on the radar screen. now it's a plan in everyone one of the 50 states. >> reporter: klaas says social media plays an important role in finding missing children. he says he knows that law enforcement might be criticized for not finding the victims sooner but says these cases are extremely difficult to solve. >> i think they did everything they could do. fortunately, for everybody, amanda berry took it mon herself to effect her own escape. >> reporter: now, marc klass said he thinks it's probably very likely, these women will avoid media expose sure at least for the short-term in order to he

klaas. his 12-year-old daughter, polly, was kidnapped and killed nearly 20 years ago.o joining me, jeff gardere, he's a psychologist and nbc news contributor. thank you, jeff. thank you, marc. tell me what it tells us about the missing persons. you hear young women running away from a difficult situation at home and want to have freedom. are they never heard from again and police rest the case, they kill it? what happened to these cases, do you think? >> the fallback position used to be if a girl is missing or a child is missing that they're most likely a runaway and absolve law enforcement of most responsibility. we learned from the 20 years since polly that that's not the case at all. for a variety of reasons, children are snatched off the street either by other family members or in the rare instance, strangers, such as this guy, castro, was. we have tools that exist now that didn't exist before, including law enforcement protocols. things like the amber alert. we have things like megan's law that gives us a heads-up as to who these individuals are in our neighborhoo

. >> mark klaas living the nightmare, the story ending in tragedy. clearly must be emotional for you, your own daughter pollyped and murdered, and i don't know if a parent ever gives up hope their child is alive. but when you heard this, when you heard these girls made it after ten years, what was going on through your mind or through your heart today? >> well, i didn't believe it. i mean, you know, finding one child that's been missing for a decade, particularly under these kinds of circumstances, young girls, kidnapped by a predator to find even one child alive after a decade is an extraordinary thing. but to find three children who are now young women alive after this length of time is -- you don't want to throw this word around too much, but it seems like a miracle. certainly the sun shines a little brighter in the united states today because of the extraordinary events that happened in cleveland last night. >> marc, i talked to you on cnn international. you gave a great response to the question. i want to put it it you again. obviously there's psychological impact. given your perspective, where you're c