Engineer Chi Mak was allegedly leaking Naval secrets to the Chinese government back in 2004 and was pursued by the FBI and NCIS.

Investigations begin on an undercover sting operation to stop illegal arms; led by ICE and Homeland Security.

During the Cold War, the U.S. military races against time to recover classified footage from a top secret surveillance satellite that crashed into the Pacific Ocean before it falls into enemy hands.

A report on efforts by President George W. Bush and the Joint Special Operations Command to stop violent Al Qaeda leader Abu Musab al-Zarqawi.

The FBI and Defense Intelligence Agency team up to capture DIA Senior Analyst Ana Montes for allegedly passing sensitive intelligence to Cuba.

The story of Aleksandr Ogorodnik, a Soviet diplomat with the codename Trigon, who was recruited by the CIA at the height of the Cold War to obtain valuable intelligence on the Soviet Union.

The U.S. military's search for missing Iraq dictator Saddam Hussein.

A Taliban double agent was instrumental in securing the release of foreign nationals held hostage in Afghanistan by the Taliban.