I need somebody to know it's my house. I think my fiance is dead.

The fact that out of the blue, some agent who's never worked this murder randomly gets this information from somebody just was extraordinary.

This almost killed me 25 years ago. Literally almost killed me.

I don't even know if I ever, ever mentioned this before.

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

I'm Anna Sige-Nikolazi, former New York City homicide prosecutor and host of investigation discoveries through conviction.

And this is Anatomy of Murder.

Here's the story you may be familiar with. A high school football star begins dating the school cheerleader.

They live in a farm town where neighbors know each other's names and wave as they pass each other on the street.

The man is charming, the woman beautiful. They get engaged and live happily ever after.

That is sadly not the ending of today's story.

Corey Winnicki was a former high school football star at the prime of his life.

At 22, he was engaged to be married and by all reports well liked by the many residents of his hometown in Iowa.

But his life met a tragic end. In October of 1992, he was found dead in the house he shared with his fiance and the culprit wouldn't be found until decades later.

Today's story takes place in West Liberty, Iowa, which sits in Muscatine County.

West Liberty is a small community in the western part of Muscatine County. It's about halfway between Muscatine and Iowa City.

It's a few thousand people, tightly knit, being in Iowa, a lot of corn and soybeans and pigs and chickens.

That's Alan Ostergren, who got to start in the Muscatine County Attorney's office in the late 1990s.

It's a really great place to have a prosecution career. It was a very supportive community to me, even though I wasn't from there.

They welcomed me as an outsider to work there in the County Attorney's office. It's a very interesting place in Iowa and a place that is pretty proud to be associated with.

So in talking with Alan about his office, one of the things we talked about how many attorneys there were, and his office had at the time a total of five.

And so of course, they can't help but compare it to the type of office that I came out of. Brooklyn, when I left, had over 400 attorneys.

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