Wundry Plus subscribers can binge new seasons of American scandal early and ad free right now.

Join Wundry Plus in the Wundery app or on Apple Podcasts. Wandering. It's a crisp evening in December 2000, and in the DC suburb of Vienna, Virginia, two young

FBI agents sit inside a black SUV waiting for a signal from their

colleagues up the street. These agents are part of a team keeping Robert

Hanson under 24-hour surveillance. Just a month ago, Hansen became the lead suspect in a decades-long hunt for a mole who's

been selling top-secret information to Russia.

Their big break came when a former KGB agent handed over the Russians file on the mole.

Inside it, the Bureau found a treasure trove of evidence including letters written by the mole and a recording of his voice which seemed to match Hansons.

But the most direct piece of evidence was found in a mysterious envelope marked Do Not Open.

It remained sealed until the former KGB agent returned to the U.S. to explain its contents.

Inside was an old plastic garbage bag used by the mole to deliver documents to the Russians and upon closer examination the

FBI fingerprint lab found two latent prints on the bag both from Hansen. The

FBI now has enough evidence to arrest Hanson for espionage and likely convict him.

But before they do that, they want to determine whether he's still actively spying.

If they can catch him in the act, it will make the case against him that much stronger.

So the FBI has wiretapped Hanson's phone, hidden GPS trackers on his cars, searched

his office,

and even covertly purchased a home across the street

to watch him around the clock.

But so far, not much has happened.

Inside the black SUV the young agent at the wheel stifles a yawn.

Even on a big case like this surveillance work can be tedious,

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