In 2001, Robert Hanssen’s spy career comes to a crashing halt after he’s arrested in the middle of a handoff to the Russians. It’s a massive win for the FBI, but not without its own fallout. FBI director Louis Freeh still needs to explain to the American public how Hanssen was able to go...

By the 1990s, Robert Hanssen has been spying on and off for more than a decade. After the fall of the Soviet Union, he decides to break off contact with his Russian handlers. But his urge to spy is too great, and soon he revives his alter ego “Ramon” — unaware that a former KGB agent has just...