1x1 - The Hunt for Hitler

Soviet leader Joseph Stalin concealed Hitler’s body from the West for decades. The FBI spent years tracking false leads and sightings of Hitler. Only in the 1990s did Russians open archives to reveal a handful of Hitler's teeth and fractured skull pieces.

1x2 - The Hunt for the Boston Strangler

January 30, 2007

Police closed the case of the infamous Boston Strangler when Albert De Salvo confessed to the grisly murder of 13 women. But recent forensic evidence reveals the Strangler could still be at large.

1x3 - The Romanovs

In 1918 Russia's last imperial dynasty, the Romanovs, were assassinated. But doubts remain as to whether all members of the royal family were put to death. Did the Tsar's daughter, Anastasia, escape?

1x4 - The Real Roswell

January 23, 2007

On July 8, 1947, the U.S. Army issued a press statement claiming to have recovered a flying saucer on a ranch outside Roswell, New Mexico. But within hours they retracted the statement saying they had only found the remains of a weather balloon. Sixty years later the debate still rages and Roswell has become the UFO capital of the world. Did the military really recover dead aliens and their spaceship, as some people claim?

1x5 - The Secrets Of J. Edgar Hoover

For 20 years, FBI Director J. Edgar Hoover denied the existence of the mafia. Was it because he was being blackmailed by them, with the threat of being exposed as a gambler and cross-dresser?

1x6 - Where's Amelia Earhart?

April 10, 2007

As world famous aviator Amelia Earhart closed in on her record-setting attempt to fly around the world in July 1937, she disappeared somewhere over the Pacific Ocean - vanishing without a trace. Did she run out of fuel and crash into the sea? Or could she have survived? NGC explores one of the most fiercely debated mysteries of all time. Investigators build the case that she was a pawn in an espionage plot for President Franklin D. Roosevelt, while eyewitnesses testify she was captured by the Japanese military. Examine the evidence and decide for yourself what might have happened to Amelia Earhart.

1x7 - Howard Hughes Revealed

December 11, 2007

How and why did a man so rich, so accomplished and so visible become so reclusive, phobic and fragile? How much truth is there in the popular image of Hughes' descent into madness? What can recent medical discoveries contribute to our understanding of this man, his habits, behaviors and final years? NGC reviews recent studies of America's most bizarre billionaire.

1x8 - The Unabomber: Ted Kaczynski

Ted Kaczynski sent the FBI on a million manhunt. We investigate how his childhood as a prodigy led him to academic glory at Harvard.

1x9 - Secrets of the Moon Landing

Neil Armstrong, the 1st human being to set foot on another planet. We bring you the the untold stories of Apollo 11's mission and the 5 moon landings.

1x10 - CIA Secret Experiments

A US army scientist died for his involvement in a secret CIA experiment.What was the true extent of these secret CIA experiments and their casualties?

1x11 - Secret History of the Atomic Bomb

NGC delves into the tumultuous history of the atom bomb - filled with deception, twists and danger that even Hollywood couldn't make up. Culling from rarely seen archival footage and interviews with leading experts, we'll see how Soviet spies gathered top-secret information during WWII. Learn why China shared its nuclear weapons technology with other countries. Find out how Israel's nuclear weapons program was exposed by a disgruntled worker who leaked information before being kidnapped.

1x12 - Vanished from Alcatraz

Documentary exploring the remarkable escape of three prisoners from the fortress-like penitentiary in 1962, and the still-ongoing US Marshals investigation to track them down.

1x13 - Secret Life of Charles Lindbergh

Charles Lindbergh becomes the world’s most famous man in 1927 when he flies non-stop from New York to Paris. But behind the legend was a man who juggled multiple secret lovers and took on a President.

1x14 - Hunting the Anthrax Killer

July 31, 2009

Seven years after a deadly anthrax attack in the US, the FBI announces a suspect. But the man committed suicide just days before being accused. Is he a scapegoat in a case that will never be solved?

1x15 - Episode 15

1x17 - Secrets of the Virgin Queen

January 25, 2011

1x18 - The Real Roswell Conspiracy

July 1947,some remnants of a strange object were found in Roswell. Rumoured to be UFO but authorities deny it. Are they hiding something?