Natalie Morales

Bill and Lorne knew their daughter. This didn't sound like her. She wouldn't go on an overnight hike spontaneously. She probably wouldn't go on an overnight hike at all. Erin was a homebody. She stayed inside her comfort zone. The Hevelins thought through what might have happened. and quickly discounted some possibilities.

Worried, Lohr pressed Erin's husband, John, for more details. The last time John said he saw Erin was early the morning before. He said she kissed him goodbye around 7 a.m., and he watched her drive off in their car. He went back to sleep. A while later, he got up and spent the day playing video games. By nightfall, Erin still hadn't come home. She was supposed to be back in time for dinner.

Worried, Lohr pressed Erin's husband, John, for more details. The last time John said he saw Erin was early the morning before. He said she kissed him goodbye around 7 a.m., and he watched her drive off in their car. He went back to sleep. A while later, he got up and spent the day playing video games. By nightfall, Erin still hadn't come home. She was supposed to be back in time for dinner.

Worried, Lohr pressed Erin's husband, John, for more details. The last time John said he saw Erin was early the morning before. He said she kissed him goodbye around 7 a.m., and he watched her drive off in their car. He went back to sleep. A while later, he got up and spent the day playing video games. By nightfall, Erin still hadn't come home. She was supposed to be back in time for dinner.

But John went to bed. The next morning, according to John, It had been 24 hours since Aaron had driven out of sight. John alerted the authorities. Then he called Lore.

But John went to bed. The next morning, according to John, It had been 24 hours since Aaron had driven out of sight. John alerted the authorities. Then he called Lore.

But John went to bed. The next morning, according to John, It had been 24 hours since Aaron had driven out of sight. John alerted the authorities. Then he called Lore.

I'm CBS News correspondent Natalie Morales. This is 48 Hours NCIS, where we take you inside a case NCIS agents say they will never forget. Episode 1, Where is Aaron? While his 19-year-old wife was missing, John spent most of the day at home.

I'm CBS News correspondent Natalie Morales. This is 48 Hours NCIS, where we take you inside a case NCIS agents say they will never forget. Episode 1, Where is Aaron? While his 19-year-old wife was missing, John spent most of the day at home.

I'm CBS News correspondent Natalie Morales. This is 48 Hours NCIS, where we take you inside a case NCIS agents say they will never forget. Episode 1, Where is Aaron? While his 19-year-old wife was missing, John spent most of the day at home.

Paul LaRosa is a producer for CBS News and 48 Hours. He reported on Erin Corwin's disappearance. La Rosa had a lot of experience telling true crime stories. He knew that generally when someone goes missing, the first person investigators turn to when they need answers is the spouse. In this case, that was John Corwin.

Paul LaRosa is a producer for CBS News and 48 Hours. He reported on Erin Corwin's disappearance. La Rosa had a lot of experience telling true crime stories. He knew that generally when someone goes missing, the first person investigators turn to when they need answers is the spouse. In this case, that was John Corwin.

Paul LaRosa is a producer for CBS News and 48 Hours. He reported on Erin Corwin's disappearance. La Rosa had a lot of experience telling true crime stories. He knew that generally when someone goes missing, the first person investigators turn to when they need answers is the spouse. In this case, that was John Corwin.

So to the authorities, it was initially suspicious that John waited to report Erin missing.

So to the authorities, it was initially suspicious that John waited to report Erin missing.

So to the authorities, it was initially suspicious that John waited to report Erin missing.

Once John finally did alert the authorities, the local sheriff's department in San Bernardino immediately opened up an investigation. But they needed help for this specific case.

Once John finally did alert the authorities, the local sheriff's department in San Bernardino immediately opened up an investigation. But they needed help for this specific case.

Once John finally did alert the authorities, the local sheriff's department in San Bernardino immediately opened up an investigation. But they needed help for this specific case.

NCIS, the Naval Criminal Investigative Service. Most of us may recognize this name from television.