Sex Offenders - What Should Happen to Them?

When looking over some online news this morning, I stumbled across this horrible story.

A registered sex offender, that previously has spent 15 years in prison for choking and raping a woman back in 1989, is now responcible for this:

Investigators trying to identify six bodies found in the home of a convicted rapist in Cleveland are focusing the inquiry on eight or nine missing women.

You really have to read the entire story to grasp how horrible this really is. I mean.. talk about evil walking on earth - this man is it!

Everytime I read a story like this, I always scroll down to the last couple of paragraphs to see if the phrase "a registered sex offender" appears. Most of the time, it does.

How many women have to be brutalized, how many children molested and raped, how many people horribly hurt by sex offenders for our justice system to get the point: THEY CANNOT BE CHANGED. Show me ONE case of a serious sex offender getting caught, getting let go, and NOT repeating the crime. Maybe they're smarter the next time, maybe they learn not to get caught, but when people are true pedofiles or rapists, they just are. Period. End of story. No second chances.

Typically, this is the exact opposite of what I believe. I know that God forgives and that God can change anyone. However, I just don't think that, in the name of keeping people safe, these people should be given chance after chance to prove themselves changeable. If an adult brutalized a child - why is this not considered such a haneous crime that they are locked away for life? I know that issues of rape between adults are not always black and white, but if it is found that a man rapes a woman - and it is a black and white issue - how many chances should he be given in the future to rape more?

This just sends me into a rage. Time after time, these people are let out to simply do the exact same crimes they were put in prison for - and often times when they are released they are even more unstable than when they were first locked up. Notice how this guy went from "just" a rapist to now a serial killer/rapist.

Do people think that prison somehow reforms these truly insane people? Do they think they're receiving intense therapy while they are locked in a cell 23 hours a day? Even with therapy, does the public understand the almost non-existant success rate with rehabilitating sex offenders?

Am I the only person in  America truly outraged with this? Why is more not being done?