Nancy Grace

The FBI has a huge database of all sorts of materials, clothing, textures, you name it.

And I guarantee you, if this is real, they're pouring through it right now.

Straight back out to Dave Mack.

What can you tell me about the guy that drives by Nancy Guthrie's home in the dark of the night up to 100 times, all the time staring at a photo of her in the car?

Crime Stories with Nancy Grace.

Joining us now, Heather Barnhart, digital forensics expert with Celebrite.

You heard all about that during the Alex Murdoch trial, cracked the case wide open, and the SANS Institute, System Admin Audit Network and Security.

She worked on the Brian Koberger case.

She is the co-author of Practical Mobile Forensics, now in its fourth edition.

Wow.

Heather, thank you for being with us.

Heather, I want to talk to you about the so-called ransom notes.

Heather, is there anything about these ransom notes that would suggest that they were AI-generated?

And what are your thoughts about tracking that?

Wow.

I hadn't thought of that.

Heather, that's pretty amazing.

What about if a VPN was being used?

Heather, I want to circle back to the video that has just surfaced about the video of the vehicles flying by at the same time Nancy Guthrie is kidnapped in her neighborhood.

What do you make of that?