We are driving up and down Cambridge.

There's a library back here.

It's a hot August day.

We're in a tiny rental car in suburban Boston,

driving between the mall, the library, and the parking lot of a McDonald's.

Trying to interview a man the FBI has spent the last 40 years investigating.

I'm approaching four and a half, five hours of stakeout number two.

Just hanging out on public walkways, hoping he'll come out and talk to us.

It's the second time this summer that we've flown all the way from Chicago to try to get an interview.

But our subject hasn't spoken to the media in over a decade.

He used to love to talk.

He did local TV interviews.

He sent letters to our newsroom, the Chicago Tribune.

He talked for hours with the FBI, offering to help them in an investigation where he was the target.

There's the famous staircase where the FBI came down the 2009 raid with the bankers' boxes filled with...

The FBI searched his condo in 2009, right here, about 20 feet from our car.

It was the first public indication that authorities were still investigating him for a 1982 crime.

Since then, we've learned so much more about the events leading up to this raid and what happened after.

We wanted to talk to him, so we spent hours waiting.

And then...

That's him.

Hi!

...