My prayer was always like, hey, I want to be able to give this family closure.

That was what was important to me on this case and saying that, okay, this is what happened to Kathy that night.

And, you know, so they can have that peace.

To lose somebody in such a violent way and then just to live year after year not knowing what happened to her or who did it,

it's a nightmare that no one wishes upon anybody.

I'm Scott Weinberger, investigative journalist and former deputy sheriff.

I'm Anasiga Nikolaazi, former New York City homicide prosecutor and host of investigation discoveries true conviction.

And this is Anatomy of murder.

Some crimes raise more questions and answers, leaving families, friends, and entire communities trapped in the limbo of uncertainty.

The story of Kathy Holly was one shrouded in heartbreak and mystery. In 1979, at just 19 years old, she vanished without a trace.

What followed was a void, filled only by whispers of what could have happened.

The clues were there, pieces of a puzzle scattered across the years.

But the truth doesn't stay hidden.

It finds a way to surface even when buried deep.

Investigators work to uncover that truth, and in a case like this, to hopefully transform lingering questions into definitive answers.

It's a role that requires determination and persistence, qualities that Detective

Ryan Pete embodies. I've always been someone who just wants to find answers. You know, I like

researching things. I like digging into things. If somebody loses something, I want to be the

guy to help him find it. I've just always had that in me. I don't know what it is, but I just

love the idea of being the guy that puts me. I don't know what it is, but I just love the idea of

being a guy that puts the pieces together. Ryan spent more than a decade at the North Aurora

Police Department in North Aurora, Illinois. For the past three years, he's worked in their

...