Dr. Gerald Vincent Bull was one of the world's foremost experts on ballistics and weapons systems, until his lifeless body was discovered on the doorstep of his Brussels apartment. This Canadian scientist was contracted by the government of Saddam Hussein to build an extraordinary artillery piece known as the "supergun". His assassination sparked a murder mystery that remains unsolved to this day.

He was a linguist, a brilliant academic, and a master spy. She was a seductive blonde beauty, dressed in minks and diamonds. Karl Koecher is the only intelligence agent from the Soviet Bloc who succeeded in penetrating the CIA. He and his wife Hana spent twenty years leading a double life as "sleepers", Soviet moles building up a carefully designed identity.

Sir Oswald Mosley led the British Union of Fascists in the London of the dirty thirties. He stood on the podium in Rome beside Mussolini. Hitler attended his wedding in Berlin. But was Sir Oswald Mosley a traitor? How deep was his involvement with Adolph Hitler? Recent revelations from British intelligence reveal a right wing coup almost hatched in the heart of London.

Mordechai Vanunu is widely considered a hero by anti nuclear activists worldwide and a traitor by most Israelis. A former technician in Israel's top-secret nuclear facility, Vanunu revealed to the world details about Israel's suspected nuclear weapons program. Was he a ruthless traitor or a heroic whistle blower?

Aldrich Ames was probably the most damaging mole in CIA history. In 1985, he single handedly shut down the CIA's eyes and ears behind the Iron Curtain by revealing to the KGB the name of every "human asset" that was secretly spying for the West. At least 10 agents were executed, and dozens were condemned to harsh prison sentences in the Soviet gulag.

On his 2,500-acre farm, Ed Wilson hosted afternoon BBQs and swanky evening parties for senators, congressman, admirals, generals and CIA officers. But behind Wilson's charming exterior lay a man deep in the world of illicit arms smuggling and international mercenaries. At the time of his arrest, Wilson was the United States most wanted fugitive in the world- or was he in fact, a CIA operative?