Sky History 2 Sunday

How, between 1940 and 1945, an MI5 agent going by the name of Jack King infiltrated Fascist networks in Great Britain by posing as an undercover Gestapo officer

Experts examine the ruins left by ancient civilisations, including the Mayans, in the hope of finding evidence of extraterrestrial contact

A look at whether aliens could conceivably have been involved in the development of lethal weapons, from gunpowder to missiles

Experts investigate macabre places associated with death, and question whether otherworldly connections could be responsible for strange disappearances and suicides

The jaw-dropping world of three crazy rich ancients who built some of the largest, most luxurious palaces ever known to man

The wealthy ancients who poured their money into building the most luxurious final resting places for themselves after death

The most outlandish naval technologies of the ancient world, and how the engineering involved in their construction led to other innovations

A trip to Canyonlands National Park in south-eastern Utah, where a demonic truck driver, disembodied voices, nightmarish skinwalkers and a time loop are all reported to exist

A look at America's network of national parks, vast, dense expanses of virtually unexplored wilderness, starting with the area around the Grand Canyon

Hannibal led tens of thousands of men and horses from the Iberian Peninsula across the Alps into Italy and Rome. This film appraises his likely route

Drama-documentary that uses the Colosseum to tell the story of the Roman Empire, through the lens of the men and women who fought and died there

Inspired by the story of his two cousins who died at sea in the Second World War, the actor heads to Scapa Flow where he finds treasure that could link to his family

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 visits archaeological digs in the north of Britain, where finds include Scottish man-made islands that help paint a picture of Stone Age tech

The secrets of the Founding Fathers, who established the pillars of freedom and democracy in the United States more than two centuries ago

The veteran actor reveals many eerie stories of cursed mountains, monsters and even UFOs in the American frontier

Phillip J Corso claims that the US army has physical evidence of alien crafts. The programme investigates the secrets to be found in the mysterious Project Aurora

A look at a theory that suggests aliens may have colonised an ice-free Antarctica, before a global event plunged it into the Ice Age

New theories shed light on the world's biggest mysteries, beginning with the unsolved disappearances of aviator Amelia Earhart and hijacker DB Cooper

The role that planners, designers, architects and builders played in shaping the Second World War, thus helping Adolf Hitler retain power, starting with Albert Speer

The truth behind the rumours of Hitler's sex life, including whispers of homosexuality, voyeurism and sadomasochism, and the impact upon his overall behaviour

An investigation into crop circles, considering whether they are a hoax or evidence of alien interaction

A look at a theory that suggests aliens may have colonised an ice-free Antarctica, before a global event plunged it into the Ice Age

The top 10 alien craft, from V-shaped objects to orbs of light to flying saucers

The actor explores some of Britain's most tragic disasters, starting with the 1999 rail accident at Ladbroke Grove in London that left 31 dead

The actor explores six tragic disasters, focusing on the Zeebrugge ferry disaster of March 1987 in which the Herald of Free Enterprise capsized, killing 193 passengers and crew

Through history, mankind has credited its existence to otherworldly beings. This programme contemplates whether any proof can be found in these early beliefs