Secrets of War: Espionage (2013)

Unearth the amazing true stories of cunning deception and sabotage that pulsed through the most significant moments of the 20th Century! From double agents to secret weapons, spy planes, and guerrilla campaigns this 10 episode instant classic reveals a wealth of undercover tactics used by history's most influential leaders. Narrated by Oscar Award winner Charlton Heston, this series brings to life the hidden and unique conflicts of war that were once declared classified information.

The Spy Who Brought Down Mary Queen of Scots (2014)

With the aid of dramatised scenes and location-based interviews with leading historians, this film tells the riveting story of how, over an eight-week period in 1586, England's greatest spymaster used covert espionage techniques to foil a Catholic conspiracy to murder Queen Elizabeth I and engineered the execution of Mary Queen of Scots. Sir Francis Walsingham is recognised as one of history's master spies, thanks to the extraordinary trap that he set for Mary, Queen of Scots. Using a sophisticated network of double agents, informants, and secret codes he allowed Mary to believe that she was master-minding a plot to destroy Elizabeth. In fact, every move Mary made was tracked, by intercepting and decoding her correspondence. As a result, the Scots Queen was exposed as a threat to the Crown, and Walsingham was finally able to persuade Elizabeth to execute her.

* Barbershop Punk (2010)

Is "The Man" controlling the vertical, the horizontal and the channel you'll be on? In a privatized American Internet, is big business "Big Brother" or does the free market protect and serve the needs of the average citizen with its invisible hand? With the simple act of swapping files, barbershop quartet baritone Robb Topolski finds himself at ground zero of a landmark case whose outcome will affect the rights of every American citizen. Following one man's personal quest to defend what he believes to be his inalienable rights, BARBERSHOP PUNK examines the critical issues surrounding the future of the American Internet and what it takes to challenge the status quo. Contemplating the future of the American Internet and the inalienable rights under review.

* The NSA is Coming to Town (2013)

Protests, propaganda and the power struggle dominating Ukraine's airwaves. Plus, the slow TV phenomenon in Norway and the American Civil Liberties Union Santa parody song "The NSA is Coming to Town".

* Double Cross: The True Story of the D-day Spies (2012)

Writer and presenter Ben Macintyre returns to the small screen to bring to life his third best-selling book. Macintyre reveals the gripping true story of five of the double agents who helped to make D-day such a success.

* Argo: Inside Story (2013)

It's awards season and movie critics are buzzing over Ben Affleck's Argo, which chronicles the CIA's attempt to rescue six Americans during the Iran hostage crisis. But what really happened during the covert operation? And did the events really unfold as seen in the movie? In ARGO: Inside Story, Discovery Channel gains access to the top players involved to hear their side of the story, including the CIA's "chief of disguise," Tony Mendez, who was called upon to devise the rescue plan. The one-hour special gives an inside look at the dramatic escape and how Mendez forged identity documents and elaborate disguises to get past the security agents at the Tehran airport.