CIA spy who betrayed his country in a very major way. Expert Pete Earley tells the story of this very damaging spy and what may have motivated him...

For decades this spy story has aroused extraordinary passions. The perception of Alger Hiss's guilt or innocence was inextricably tied to the fortunes of his nemesis Richard Nixon.

The first of a three-part series on PFC Bradley Manning and the scandal surrounding the accused WikiLeaker.

Part two of a three-part series on PFC Bradley Manning and the scandal surrounding the accused WikiLeaker.

The conclusion of a three part series on PFC Bradley Manning and the scandal surrounding the accused WikiLeaker.

Philby, Burgess and McLean put real British class into espionage. New Chapter gives new insight into the fourth spy, Anthony Blunt.

Two long-time friends go into the espionage business, selling spy satellite drawings to the Russians. This story was the basis of the movie and book The Falcon and the Snowman. Now, Boyce is free and married, trying to put his life back together.

Was this very famous playwright murdered because he was a spy, didn't pay his bar bill, or because he called Jesus and his disciples a group of promiscuous homosexuals? Dr. Russell Aiuto presents the evidence.

The American traitor once said the best way to hide a lie is by wrapping it in layers of truth. It's a trick that not only serves spies, but also clever Hollywood scriptwriters. Such is the case with The Good Shepherd, a cloak-and-dagger thriller that purports to tell the story of the Central Intelligence Agency's early days as seen through the eyes and career of Edward Wilson, the movie's main character. Played by Matt Damon, Wilson is patterned after the legendary spy-catcher, James Jesus Angleton.

Popular espionage author interviews Boris Solomatin, who for nearly 20 years during the height of the Cold War, oversaw most of the KGB's anti-American spy operations. Solomatin played a key role in the handling of John Walker Jr., one of the most damaging spies ever to operate against the U.S.

First CIA "mole" hunter was a fascinating, obsessive character right out of The Good Shepherd movie. Educated at an exclusive British prep school and Yale, he was recruited into the OSS during WWII and eventually became the CIA's first chief of counterintelligence.

The revelation that his drinking buddy Kim Philby was a Soviet agent shocked him so totally that he became paranoid. This legendary spy master thwarted numerous attempts to penetrate the CIA, but eventually his mistakes brought his downfall.

The tragic story of an American Jew working in Naval Intelligence who passed thousands of top-secret documents to the Israelis. Why did he take money if his motive was allegedly concern for Israel's security? How much damage did he do to U.S. security and why did Israel ultimately betray him?

A member of the famed Manhattan Project who developed the atomic bomb, but he turned traitor and gave the plans to the Russians.

The true story of the young woman who sought adventure, seduced Europe with her exotic dancing and became one of the most famous spies.

A war of words over words of war exposes the identity of covert operative Valerie Plame, ensnares White House staff and moves public opinion on the war in Iraq.

The amazing true story of the man who was the prototype of Ian Fleming's James Bond character.

Respected FBI agent, family man and staunch Catholic conservative leads a double life spying for the Russians, hanging around strip clubs and surfing Internet porn sites. Adrian Havill, author of The Spy Who Stayed Out in the Cold: The Secret Life of Robert Hanssen, tells the inside story of the real man and how the FBI trapped him.

A story of espionage, love and betrayal.

The story of Vera Atkins, the intelligence officer who recruited and deployed female agents during World War II.

Pete Earley, author of a major book on this greatest case in KGB history, tells how John Walker and his family members betrayed their country to the Russians for 18 years and how they were finally discovered.