For 15 years, a serial raid was preyed on single women in the small college town of Lafayette, Louisiana.

Although his MO was always the same, investigators had a few clues to his identity.

The masked assailant would break into women's homes late at night, blind them with a flashlight, and assault them at gunpoint.

But when the locations of all these crimes were entered into a new computer program, police learned more about the perpetrator than they were prepared for.

In August of 1995 in Lafayette, Louisiana, thousands of college students were arriving for the fall semester at the University of Louisiana.

One of the students beginning her senior year was a 21-year-old woman whom we'll call Anne.

Anne was working her way through school at a local health club and earned extra money by babysitting for a friend who lived in an affluent suburb not far from school.

In fact, city official lived right across the street from this woman where I babysit.

I couldn't have picked a place to feel safer. It was just a place that had American dream. No one can hurt you here, written all over it.

On August 30, 1995, Anne's friend had to go out of town for a business trip, so Anne agreed to stay overnight with the two children.

Anne put them to bed around 10 o'clock. She allowed them to stay up a little later that night since they didn't have school the next day.

Afterwards, Anne started in on some of her homework.

I worked on the computer a little bit, decided to get a head start on some of the assignments that I got in that day. It's probably around 11 o'clock. I decided to go to bed.

Around 2 a.m., Anne awoke to find a masked intruder armed with a gun. He threatened to kill her and the children.

He shone a flashlight in my face, so I really couldn't see anything at all. I was wearing these wool gloves and really scratchy gloves.

He had a flashlight and then one hand and the gun and the other.

The man wore a knit hat and a bandana over his face and forced Anne to walk through the entire house.

He said he was looking for money, but took nothing of value.

He found Anne's home address in her backpack and said he would track her down if she did not do exactly as she was told.

He really could kill me in just a second. So I knew that to save my life and to save the two children's lives.

I had to do what he said. And so I did and he raped me.

Later, the perpetrator led Anne to the bathroom, told her to urinate and to count to 100 before getting up.

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