This was the Christmas choir banquet. She was dressed up to the nines.

This young girl catches his eye. She caught everyone's eye.

She didn't come home that night. There was blood everywhere. There was blood spatter all over the inside of the car.

It was very frenzy to attack. The entire town was going crazy.

The theories were just awful. Drug rings, prostitute rings.

Painful for your parents. Horrible. My mother eventually did not go out of the house.

We got a call. We got three brothers and we think one of them is the killer.

But they didn't know which one. All three of them are still in Iowa. You got a live one here.

We got a live one here. We're ready to go.

He was sitting at a booth right by the window there. It's hard to enjoy your food when you think you're staring at the killer.

It was an act of unspeakable violence.

It was a really horrific crime. Everybody was scared. A murder that shattered a family.

My parents were devastated. My mother eventually did not go out of the house.

A who done it? They grabbed hold of a city and wouldn't let go.

It's been kind of a dark cloud hanging over the community for 40 years.

A case that touched generations of investigators who refused to quit until the killer was found.

They cared about this family. They cared about solving this murder. They weren't going to give up and they didn't.

Kurt Thomas says he was a lucky kid. He got to grow up in Cedar Rapids, Iowa.

It was a magical bubble. We didn't know anything but fun.

A lot of that fun happened at the mall. For teenagers it was the place to shop, eat and hang out.

That's where the kids hung, huh? It was a place you could go at any time and it was a big deal.

High school senior Michelle Martinka was no mall rat but she did shop and work at one near her home.

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