This episode contains stories involving violence against children.

Listener discretion is advised.

There are over 100,000 cold cases in America.

Only 1% are ever solved.

This is one of those rare stories.

Thank you. is one of those rare stories. Seven miles outside the town of Green River, Wyoming,

the Lost Dog Trail heads south into a canyon called the Flaming Gorge.

Sergeant Kevin Alvesteffer patrols this wilderness for Sweetwater County.

On August 10th, 1996, at a little after 3 p.m., he gets a call.

A man had called in on a cell phone stating that his wife and child had fallen off of a cliff.

He went on to say that he didn't know if they were dead or not, but he could hear them gurgling.

The man on the phone identifies himself as Bob Duke, but is unsure of his exact location.

40 minutes later, Alva Steffer finds Duke at the top of a cliff.

In a heap on the rocks below, Lai Duke's wife, Leanna, and his five-year-old son, Eric. Duke tells police the

young family had chosen the cliff for their afternoon picnic.

His wife and child were out on the point. His child was chasing lizards. He had

went back to his vehicle to get something to drink when he heard his wife yell his name.

He went out onto the point and found them missing.

He looked over the edge and saw the bodies.

The top of the cliff is flat and littered with broken rock.

At the edge is a drop of more than 100 feet. Duke tells Alvestefer he tried but

was unable to get down the cliff to check on his family. The Green River Fire Department,

...