Anyone who is a spy history buff will know that American Intelligence caught three high-profile Russian spies in the 90s: Aldrich Ames and Edward Howard from the CIA, and Robert Hanssen from the FBI.  But did you know that there have always been rumblings that there was a fourth man?

Bestselling author and intelligence analyst for CNN, (one of the most accomplished officers in CIA history), Robert Baer says it’s time to talk about The Fourth Man (which happens to be the name of his new book!) – someone who may be the greatest traitor in American history – and who may still be alive.

In our chat we find out how the intelligence organizations discovered the three moles within, and why there is credible belief that there was a fourth mole – the Fourth Man - and how these spies allowed Putin to come to power. In addition, we discover why people become spies, what the state of US spycraft is today, and what is the biggest danger in the world today. Plus – how he made ME part of the spy story!