I see a charred body of a little infant that maybe you're

going to have two years old.

It's not rational.

It doesn't make sense.

So why would you come across a burned baby?

I mean, we see some strange things out here sometimes,

but you just don't see burned babies later on.

He put the baby on the phone.

And I just hear her screaming and crying and crying,

you know, calling mama, mama, mama.

In October of 1990, a rancher and his five-year-old son

made a gruesome discovery while driving cattle

through the Arizona wilderness, laying

at the bottom of a ravine was any father's worst nightmare.

The charred remains of what appeared to be a baby girl.

Any murder is a tragedy.

But when a child dies violently, investigators in the community

are even more motivated to solve the case.

But as police begin to investigate,

they found quite literally nothing,

no missing person report, no evidence, and no suspects.

Authorities were forced to name the one-year-old child,

...