Natalie Morales

So Special Agent Randolph dispatched a team of NCIS experts.

Analyst Ashley DeChelfin was sent to the 29 Palms Marine Base from another NCIS office on the Camp Pendleton Marine Base only a few hours away. When she arrived in 29 Palms, she met her colleagues, got up to speed on the investigation, and dove right into work.

Analyst Ashley DeChelfin was sent to the 29 Palms Marine Base from another NCIS office on the Camp Pendleton Marine Base only a few hours away. When she arrived in 29 Palms, she met her colleagues, got up to speed on the investigation, and dove right into work.

Analyst Ashley DeChelfin was sent to the 29 Palms Marine Base from another NCIS office on the Camp Pendleton Marine Base only a few hours away. When she arrived in 29 Palms, she met her colleagues, got up to speed on the investigation, and dove right into work.

She scrubbed through Erin's social media. It was 2014 and Facebook was all the rage. What was the last thing Erin posted on her profile? When was she last active online?

She scrubbed through Erin's social media. It was 2014 and Facebook was all the rage. What was the last thing Erin posted on her profile? When was she last active online?

She scrubbed through Erin's social media. It was 2014 and Facebook was all the rage. What was the last thing Erin posted on her profile? When was she last active online?

Like Special Agent Randolph, Analyst DeChelfin understood what was at risk if she missed any detail that could prove vital.

Like Special Agent Randolph, Analyst DeChelfin understood what was at risk if she missed any detail that could prove vital.

Like Special Agent Randolph, Analyst DeChelfin understood what was at risk if she missed any detail that could prove vital.

In order to find Erin, the agents needed to learn who Erin was. They needed to understand her, her personality, her temperament, what she liked and disliked. And they needed to understand her relationships, her marriage, and her family. So they picked up from California and headed to Erin's hometown, Oak Ridge, Tennessee, where Erin's life began. Erin was born on July 15, 1994.

In order to find Erin, the agents needed to learn who Erin was. They needed to understand her, her personality, her temperament, what she liked and disliked. And they needed to understand her relationships, her marriage, and her family. So they picked up from California and headed to Erin's hometown, Oak Ridge, Tennessee, where Erin's life began. Erin was born on July 15, 1994.

In order to find Erin, the agents needed to learn who Erin was. They needed to understand her, her personality, her temperament, what she liked and disliked. And they needed to understand her relationships, her marriage, and her family. So they picked up from California and headed to Erin's hometown, Oak Ridge, Tennessee, where Erin's life began. Erin was born on July 15, 1994.

When she was two weeks old, her birth mother placed her in foster care. But very soon, Erin found her home.

When she was two weeks old, her birth mother placed her in foster care. But very soon, Erin found her home.

When she was two weeks old, her birth mother placed her in foster care. But very soon, Erin found her home.

By the time Erin turned three, the Heavlin family officially adopted her. She joined a house full of siblings.

By the time Erin turned three, the Heavlin family officially adopted her. She joined a house full of siblings.

By the time Erin turned three, the Heavlin family officially adopted her. She joined a house full of siblings.

Bill and Lore also had two biological children. They all lived together in a nice house in the small city of Oak Ridge, about 25 miles west of Knoxville, Tennessee. It's a hidden city tucked along the Black Oak Ridge Mountains. And for much of its history, it was kept a secret. One of its nicknames is the city behind a fence.