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podcast to learn more. Tonight's story takes into one of the most rugged and beautiful mountain ranges in the American Southwest.

We're heading to the Santa Rita Mountains of southern Arizona,

a place known for its Sky Island wilderness, its world-famous bird watching, and its archery deer

hunts that draw experienced bow hunters from across the country. But the Santa Ritas have another

reputation, too. They sit roughly 15 miles north of the Mexican border,

and the canyons that wind through them have been used as smuggling corridors for decades.

People disappear in those mountains. People die in those mountains. Some die from dehydration

in the high country. Some die from exposure on cold October nights.

And every once in a while, though it's rare, somebody is murdered.

The case we're covering tonight involves a 53-year-old father of three,

a devoted husband, a respected member of his community,

and one of the most experienced bow hunters in the region.

He drove into those mountains on a clear October morning for what was supposed to be an ordinary

five-day hunting trip, the same trip he'd been making, almost every year, for more than three

decades. He never came home. What investigators eventually found at his campsite was so disturbing

that it changed how the Pima County Sheriff's Office approaches remote area investigations to this day.

And even now, more than a decade later, the case remains open. The men responsible,

...