Nancy Grace

It's a docuseries that helped shed new light on the Gilgo Beach murders.

Josh, thank you for being with us.

Describe what happened in court.

You know, Josh, that is certainly a scary thought.

scaring even me, who have actually prosecuted serial killers before.

Smirking.

You know, I thought he was smirking at the victims' families or at the justice system.

But you, again, have shed a whole new light on this.

Is he smirking because he knows there are other murder victims, other defenseless women that he stripped, tortured, and murdered, keeping them alive in his dungeon basement for days and days on end when his wife will be out of town, we think.

Days.

And you believe there is a chance...

that he's smirking because he knows there are other victims out there that haven't been found?

I'm curious.

Why do you say that?

Mike Gould joining us, former Nassau County lieutenant, founding member of the NYPD K-9 unit.

He's led multiple investigations into serial killers, including the Gilgo Beach killer on Long Island.

Also, Secret Service, two presidents.

Mike, thank you for being with us.

That has got to put a shiver down your spine.

thinking that there are other victims.