Dave Mack

and then, according to reports, was seen on surveillance footage around 4, 430 in Diamond Park in Oakland.

Now, what's concerning here is she left behind her phone at her house.

So this is very atypical behavior for a missing persons case.

That's correct.

Nancy, what's fascinating about— Have you seen the pictures of this park?

Yes, it's incredible.

It's a familiar place to everyone in the area.

But Nancy, here's the part that really comes into play.

We know that Amy was at her home neighborhood around 2 p.m.

She was seen by neighbors outside with her dog.

Then we have 4.30 p.m.

where she is seen on surveillance video in Diamond Park.

There's a two and a half hour window where we don't know where she was or what she was doing.

But it would take it's a couple of miles from her home to Diamond Park.

OK, it's like three to four miles.

It's not a straight shot.

Driving time, 10 to 15 minutes walking time.

Much longer.

It could take an hour to hour and a half and not something that would normally be walked.

So we've got an issue here of time and trying to build that timeline.