Sky History 2 HD Saturday

Theorists search ancient texts for proof that extraterrestrials influenced the miraculous advances made by the Sumerian civilisation 5,000 years ago

Experts investigate mysterious relics that have been revered by cultures for millennia, considering if these sacred items truly hold divine or otherworldly power

The crimes of Bradford serial killer Stephen Griffiths, who murdered three women with a crossbow in 2010. Former friends and family reveal the full scale of his misdeeds

Documentary examining the 2005 murder of 18-year-old model Sally Anne Bowman, who was repeatedly stabbed in her driveway in Croydon, south London

A daring dash through Nazi Europe, a deadly mountain escape and the Second World War's largest breakout, by men who chose death over dishonour

Archaeological finds across the North of Britain, including clues to Scotland's first kingdoms and a hoard of Viking treasure unearthed by metal detectorists

Alice Roberts and Matt Williams visit archaeological digs across the country, beginning with a look at the work being carried out in the west of Britain

The presenter is joined by Bruno Tonioli to look at key battle tactics during the Roman Invasion - such as the complexity of firing a catapult

Theorists search ancient texts for proof that extraterrestrials influenced the miraculous advances made by the Sumerian civilisation 5,000 years ago

Experts investigate mysterious relics that have been revered by cultures for millennia, considering if these sacred items truly hold divine or otherworldly power

Aurelian's rise from soldier to emperor at the end of the 3rd century AD, and how he managed to reunite the fragmented empire within five years of becoming ruler

How Constantine I became the first Christian Emperor, allowing the religion to spread through Europe and thus have a profound impact on the course of Western civilisation

Galen of Pergamon makes a name for himself as a physician for gladiators in the arena. A devastating plague sweeps through the city

A look at the events surrounding Raoul Moat's shooting spree in Northumberland during the summer of 2010 and the huge manhunt that led to his arrest

Ignatius refuses to pledge his allegiance to the emperor and is forced to travel from Antioch to Rome, where awaits his final punishment at The Colosseum. Anthony Barclay stars

A deadly discovery hiding under one of America's most national parks, a Nazi era weapon sunk off the coast of New Jersey and a blood thirsty predator found in Canada

As the next era of space exploration begins it must be analysed what humans will find when reaching other planets, as well as the dangers faced when trying to conquer new frontiers

Theorists search ancient texts for proof that extraterrestrials influenced the miraculous advances made by the Sumerian civilisation 5,000 years ago

Experts investigate mysterious relics that have been revered by cultures for millennia, considering if these sacred items truly hold divine or otherworldly power

A look at the events surrounding Raoul Moat's shooting spree in Northumberland during the summer of 2010 and the huge manhunt that led to his arrest

In Nazi Germany, questions about witchcraft attracted SS leaders. Himmler, dedicated to an Aryan super race, established a team to research witchcraft

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

Kevin Hicks and Karl Ude-Martinez test a cannon, grenade and Brown Bess musket as they explore what it was like to face a Napoleonic charge

Strange markings in the remote reaches of Northern Finland, a Manhattan-sized mystery in the depths of a Vietnamese cave and a lost sky-high world in Mozambique

Investigations into the power of the number three in history, science and astronomy, and its possible links to extraterrestrial life