Hi, park enthusiasts. I'm your host, Delia Diambra.

And the case I'm going to tell you about today takes place in the Santa Rita Mountains,

about an hour and 15 minutes drive southeast of Tucson, Arizona.

This region sits very close to the U.S.-Mexico border,

with the nearest city of Nogales, Mexico, only about an hour and 45 minutes south of the mountain range.

The terrain here is what you'd expect, rugged.

A lot of the vegetation consists of pine and oak forest, and there are canyons, narrow ridges,

and steep slopes that pop up as you go higher in elevation.

You can also find species of desert plants, too. For example,

agave and yucca plants exist even in the areas at higher altitudes. The website visit

tusson.org states that the mountains are a place people go to for everything from serenity to

discovery to adventure. In the summer of 2004, a man from Tucson who regularly hunted and camped in the Santa

Ritas took an annual trip to the region with all the supplies, gear, and experience one would

need to have a memorable few days.

But he didn't make it out alive.

And for more than two decades, law enforcement in Arizona and his family have been plagued by one question.

Who murdered Estevan Montagno?

This is Park Predators.

Music predators. I'm Oh Oh Oh Oh

Oh On the afternoon of Sunday, August 29, 2004, Darlene Montagno and some of her kids were at home in Tucson, Arizona, waiting for their dad, Estevan, to walk through the front door.

He'd left his family four days earlier on Thursday, August 26th, to go on a solo hunting trip

along the western slopes of the Santa Rita Mountains, which were a little less than an hour

...