José Díaz-Balart

That license plate had moved a lot throughout Madrid.

Particularly, this reader got it several times.

And we said, this is the license plate.

Police tracked that stolen plate to this toll booth the night Ana went missing.

They checked the security cameras, and there it was, the blue Peugeot 308 David rented in Serbia.

Its windows were tinted.

And even though it was past midnight, the driver had pulled the sun visor down.

As it goes through that toll booth,

Are you able to see him?

What we could actually see inside was that there was only one person driving, but we couldn't actually see the person.

Investigators traced the car to a neighborhood filled with stores selling motorcycle gear.

They called every single store and asked if anyone had bought a helmet or a reflective vest around the time Ana disappeared.

They hit the bullseye right here at a place called Boutique Motor.

The owner told them that a foreigner paid cash for two items.

So this is the helmet that he picked up here.

The owner tells me that these are pretty common helmets to sell.

He sells about 100 of these helmets here every year.

But then there's another, even more critical piece.

The evidence against David was mounting.

That's amazing.