I promise you I will never ever stop for as long as I'm alive and I will find out who

hurt you and I promise you they will pay for what they did to you and I

will never break that promise never unless God takes me. I'm Scott Weinberger, investigative journalist and former deputy sheriff.

I'm Aniseika Nikolazi, former deputy sheriff.

I'm Anaseika Nicholazzi, former New York City homicide prosecutor and host of

investigation discoveries true conviction.

And this is anatomy of murder.

Before we begin, we do want to warn you that this episode includes some graphic content and the crime involves brutality and sexual assault. This episode is about a mother whose young daughter and friend both endured horrific violence. It's also about a promise

that guided that mother and the law enforcement community in the many years that

followed. The promise was this, She wouldn't rest until the person who

killed her child and her friend was found. When we first learned about today's

case we knew it was going to stick with us and likely with all of you for a very long time.

It's about a devastating crime.

It's also incredibly moving because of the heart and

resilience of the victims families and of law enforcement that would not give up.

We're heading to Cape Coral, Florida, a small city next to Fort Myers, about 100 miles south of Tampa.

In 1990, Cape Cora was quiet and it had a really small town feel to it.

That's Amira Fox speaking, state attorney for the 20th Judicial Circuit of Florida.

She plays an important part in this story and in this case, but we'll

explain more about that later. The residents of Cape Coral span the economic spectrum.

It has multiple series of canals running through the city where you could get a reasonably priced house but sit on a canal that took you right out to the river and then out to the

Gulf of Mexico. You could also have a waterfront home that cost even back then

...