Sky History 2 HD Saturday

Suggestions of cover-ups over the fact extraterrestrials with a superior knowledge of science and engineering landed on Earth thousands of years ago

Giorgio Tsoukalos draws on evidence from past series as he asks whether extra-terrestrials could have introduced the Greeks and Egyptians to electricity

In 1943, Germany fell at Stalingrad, its first major defeat. In the Pacific, Japan lost momentum after the US won at Guadalcanal

This episode focuses on the Japanese Super Code, revealing the US efforts to crack Japan’s unbreakable Second World War code following the horror of the attack on Pearl Harbor

With the Allies at crisis point in 1943, pressure mounted on the Wrens to prove their worth and the stage was set for a battle that would turn the tide of the Atlantic war

Alice Roberts visits Norfolk to explore an Iron Age hillfort, discovering that 4th-century Romans used it the most, before travelling to a community dig in Lincolnshire

Uncovering archaeological treasures in the south of England, including Britain's oldest shoe, Henry V's lost shipyard and top-secret Second World War defences

Alice Roberts explores treasures in the west of Britain, including the remains of Snodhill Castle in Herefordshire and the oldest house ever found in Cardiff

Suggestions of cover-ups over the fact extraterrestrials with a superior knowledge of science and engineering landed on Earth thousands of years ago

Giorgio Tsoukalos draws on evidence from past series as he asks whether extra-terrestrials could have introduced the Greeks and Egyptians to electricity

A look at the silent threat of submarines, from tests in the River Thames, to the German's deadly U-boat attacks in the Second World War

The astonishing accounts of four railway journeys that changed history, including the perilous expedition that made a young Winston Churchill world famous

Espionage equipment, exploring the machines that hide in the shadows, capturing, transmitting and analysing vital combat information

The rumour that the tomb of Turco-Mongol conqueror Timur is cursed such that whoever disturbs it will face a calamity

How showman, politician and businessman PT Barnum made millions off the backs of the defenseless while, one by one, his properties went up in flames

The presenter explores some of the most valuable treasures found in the most unlikely of ways. They include a priceless Ancient Roman mosaic hiding in a New York city apartment

Veteran actor William Shatner examines the possibility of contact with otherworldly intelligent life, and how man should react to and handle such a situation

Suggestions of cover-ups over the fact extraterrestrials with a superior knowledge of science and engineering landed on Earth thousands of years ago

Giorgio Tsoukalos draws on evidence from past series as he asks whether extra-terrestrials could have introduced the Greeks and Egyptians to electricity

Patterns in UFO and UAP sightings across the world, focusing on findings in Alaska

Events of 1933 and 1934 when President Hindenburg signed a decree in 1933 that suspended freedom of speech and the first concentration camps for political opponents were set up

Espionage equipment, exploring the machines that hide in the shadows, capturing, transmitting and analysing vital combat information

Karl Ude-Martinez and Kevin Hicks continue their look at how weapons and body armour were developed, with a look at the impact of the War of the Roses

An array of mysterious phenomena, as seen from above. These include a Nazi weapon in Northern France and a Russian military tower near Chernobyl

Experts scrutinise the paintings, journals and technical drawings of Leonardo Da Vinci to establish whether they hide evidence of extra-terrestrial beings