that's where there's a dangerous combination. it was almost the perfect storm. >> a downward spiral jen's mother, lynn, witnessed first hand. >> the onset of his mental illness started during our marriage. >> how do you think his drug use affected him? >> oh. it just multiplied everything 10 times. and he became increasingly violent towards me. >> when you started to recognize those signs that really scared you, you started telling a lot of people. why didn't anyone listen to you? >> because -- well, they listened but there was nothing that could be done. >> i have chills as you're talking about this because this happened in the '80s. we've had shooting after shooting, serial killings and in many cases people recognize signs and report these people but nothing is done. lots of people die. >> time after time, multiple