The team are near Bloodvein, Manitoba, where a large boulder may hold a mystery of a lost Viking expedition. Meanwhile, Joe tries his hand at metal detecting near a historic fur trading fort.

The search continues, taking them into Minnesota to examine the fabled Kensington Runestone. Is there proof the lost Viking walked these parts 500 years earlier than history states?

Adolf Hitler was famously against using chemical and biological weapons, but chemistry and biological science still played an incredible role in the Nazis' unquenchable quest for power.

Adolf Eichmann, the meticulous bureaucrat behind the mass deportation of Jews, organised genocide from behind a desk. After the war, he vanished - only to be hunted down and tried decades later.

The island of Cyprus lies between the continents of Europe, Asia and Africa; Bettany explores the legacy of these diverse influences on Cyprus through four of its unique treasures.

The rivalry between Calakmul and Tikal reached its climax. Warfare, once a source of strength, became a catalyst for instability. This set the stage for the decline of the Classic Maya world.

Adolf Hitler was famously against using chemical and biological weapons, but chemistry and biological science still played an incredible role in the Nazis' unquenchable quest for power.

Belzoni uncovered Egypt's ancient wonders while Champollion raced Thomas Young to decipher the Rosetta Stone. His breakthrough gave a civilisation silent for 1,400 years its voice again.

We examine key movements in the Pacific Theatre - the Fall of Singapore, the Battle of Midway and the Kokoda Campaign - Rommel's offensives in Africa, and the Allied bombing campaign over Europe.

Nazi Germany's fate was all but sealed by late 1944, but Hitler's manic denial of this impending defeat would lead to his final gamble at the Battle of the Bulge.

Adolf Eichmann, the meticulous bureaucrat behind the mass deportation of Jews, organised genocide from behind a desk. After the war, he vanished - only to be hunted down and tried decades later.

The team ventures further into Minnesota lore as residents offer up theories of what they think happened to the lost Viking. The team is led to sites where remnants may reside.

Wildfires ravage much of Canada's north, throwing a wrench into the crew's expedition plans. With a lack of planes, helicopters, and supplies the group must find ways to overcome these issues.

The final expedition begins as the crew continue the search for physical proof of the lost Viking quest. A trapper's letter and map from 1929 might hold the key to what happened to the Vikings.

The team embarks on their most ambitious mission yet. They come across a site that is unquestionably human made. But is this the site they are looking for? Time is running out to find out.

The Axis forces begin to lose hold on their previous triumphs; between Japan's loosening hold on southeast Asia and Germany's growing defeats in Europe, we begin to see WW2's turning of the tide.

The war in Europe was over, but heavy fighting continued in the East and President Truman was desperate to bring the war to a close in the Pacific.

Bettany explores the artistic and cultural wonders of Jordan; a strategic crossing point for East and West, Jordan has been the centre of great civilisations throughout human history.

The Serpent dynasty's dominance ended. Under Jasaw Chan K'awiil, Tikal briefly led, but instability grew. Political, ecological and social pressures caused the gradual collapse of the age of Classic Maya.

What would it take to bomb the Allies into the ground? This was the question on the minds of top Nazi brass as they mobilised Germany's top scientists to create frightening new bombs.

Champollion travelled up the Nile to test his decipherment of hieroglyphs, bringing forgotten pharaohs back to life. His triumphant expedition came at a devastating cost to his health.

As the Third Reich collapsed, the perpetrators scattered - some dead, some hunted, others attempted to rewrite history. A final look at the unravelling threads of power within the Third Reich.

The team ventures further into Minnesota lore as residents offer up theories of what they think happened to the lost Viking. The team is led to sites where remnants may reside.

Wildfires ravage much of Canada's north, throwing a wrench into the crew's expedition plans. With a lack of planes, helicopters, and supplies the group must find ways to overcome these issues.