I'm Cheryl McCollum, host of the brand new co-case podcast, Zone 7.

We're going to be talking to family members, detectives, prosecutors, and nationally recognized

experts that are in my Zone 7. The group of professionals that I've called on

to help me work hundreds of cases you've heard of and thousands you haven't.

We are going to solve these cases own air together.

Listen to Zone 7 on the I Heart Radio app, the Apple Podcast app, or wherever you listen to

your favorite podcast.

Karina's body was found in the reads in Spring Creek Park, just blocks from her home at Howard Beach.

She had left barely an hour earlier for her evening run at five o'clock.

Just this for my daughter, retribution. That is everything I live for. It's all I do.

This is Karina's Stories with Nancy Grace.

Police arrested Louis this weekend claiming they have layers of evidence against him,

including two videotaped confessions and three DNA matches from the victim's fingernails

back and cell phone. This half-sister argues he is incapable of killing.

He's a skinny guy and cannot keep such a strong girl because she's a strong person.

He's a kind, gentle person, loving person.

He will never take another person's life.

This is Alan Duke, Nancy's co-host and producer for this Crime Stories podcast.

If you heard Nancy's interview last month with Phil Vatrono,

father of murdered Queen's jogger Karina Vatrono,

you know her family has been hoping investigators could use a new and controversial type of DNA

analysis to track down her killer. In fact, a New York Crime Commission hearing was set for

...