Peter Van Sant

Troubled by the coincidence, investigators decided to take a second look at Eric's alibi and where he was at the exact time his mother died at her computer.

Where were you at 5.41 in the afternoon?

Shopko is a general merchandise store, and Eric says he was there looking for a plant, an anniversary gift for his wife.

The timestamp on that receipt reads 6.15 p.m.

But deputies could find no record of Eric going to the first Shopko.

No evidence that he was shopping when his mother was murdered.

Shopko has a security camera.

And somehow that day you're invisible.

You're not on that security camera.

Why is that?

How do you explain that?

We see a lot of shoppers, a lot of purchases.

But we don't see Eric.

We don't see him.

We don't see his truck.

We see no sign of him.

How significant is that?

It's significant in that it now opens up that period of his timeline where he has the opportunity to get to his parents' house and kill them.

Eric was now the target of the investigation, even though he didn't know it.

For two months, authorities quietly gathered more evidence before bringing him in for questioning.