Due to the graphic nature of this killer's crimes, listener discretion is advised.

This episode includes graphic discussions and descriptions of murder, mutilation, sexual assault, and rape

that some people may find offensive.

We advise extreme caution for children under 13.

In the summer of 1999, 37-year-old Carrie Stainer was enjoying the peace and tranquility

and a little slice of the Yosemite National Park Forest.

Except he wasn't exactly alone.

He was lurking in the shadows of the trees, watching a woman outside her cabin.

For Carrie, Joey Armstrong seemed like the perfect target.

She was young and she was alone, but he didn't want to rush into an attack without

making sure there was no one around.

So he approached her and said hello.

They made small talk about the forest, while Carrie silently plotted out his next steps.

He was waiting for the right moment to reach for the weapon he always kept in his backpack.

Joey was polite and friendly, so she seemed happy to chat with Carrie for a few minutes.

And when he asked strange questions about Bigfoot, of course what she didn't realize was

that Carrie was stalling for time, waiting to make his move.

Then the attack came when Joey turned her back for a second.

In the blink of an eye, Carrie pulled a gun out of his bag and pointed it at her.

As he ordered the stunned woman into her own home, Carrie felt certain that this time

wouldn't be like the last.

He was going to make sure of it.

...