The Shroud of Turin: sacred Christian relic or clever fake? If it was created, it must have been by someone with extraordinary skills. The evidence points to one man, one of the greatest geniuses who has ever lived. Was Leonardo da Vinci the man behind the Shroud of Turin?

Experts in code writing and breaking tell tales of heroic risks and cat-and-mouse secrecy, where science meets deadly adventure and everyone from queens to soldiers to everyday citizens can pay the price.

Experts in code writing and breaking tell tales of heroic risks and cat-and-mouse secrecy, where science meets deadly adventure and everyone from queens to soldiers to everyday citizens can pay the price.

Episode 3 - Hijacked: When an Air France Airbus was hijacked by four Algerian terrorists in 1994, the French authorities were left with no choice but to send in their special forces squad to kill the terrorists and free the passengers.

Untilnow, former president George W. Bush, has never discussed on camerawhat he was thinking and feeling, and what drove his real-time,life-or-death decisions in the first minutes, hours and days after theattacks of September 11, 2001.

The bombing of the World Trade Center in 1993 sets off one of the biggest manhunts the world has ever known. The CIA and its intelligence partners around the world follow a chain of evidence from the Philippines to rural Pakistan to capture the man behind the plot: Khalid Sheikh Mohammed. But before they can find him, he engineers the biggest terrorist strike on America in history - the attacks of 9/11. Now, the CIA will have to employ every trick in its handbook - eavesdropping, satellite imagery, informants and paramilitary undercover ops to hunt down al Qaeda s military leader before it s too late. Teaming up with Pakistani Intelligence and the FBI, the CIA follows a frightening trail of evidence to the ultimate showdown.