Sky History2

With more than 300 UFO sightings each year, the people living within the Falkirk Triangle can't help but feel uneasy about the strange occurrences.

From mid-air abductions to near-disasters caused by unseen enemies, experts examine if we are alone in the skies over Earth.

A fascinating look at the mounting evidence that suggests UFO waves are able to penetrate the world's most closely guarded airspace at will.

Alien autopsies and recovered pieces of an extra-terrestrial spacecraft: this is the story of the Roswell incident and the truth behind the UFO. (4 of.

Visit Australia's vast expanses, where farmers have been finding mutilated cattle. Plus, meet Phil Tindale who believes he witnessed two UFOs in combat.

In 2000, two brothers spot a UFO the size of six football fields after a hunting in Idaho. A Madagascan city is plunged into darkness when a metal craft hovers overhead in 1954.

A teenager sees a mushroom-shaped object appear in the field while feeding his sheep in 1971. In 2000, police officers in Illinois chase a triangular UFO the size of a house.

Andy returns to mystical Cornwall, where he uncovers ancient legends, sacred rituals and natural wonders before hearing an inspiring tale of survival after a shipwreck.

Dan Jones visits Lancaster Castle to explore its grisly history of crime and punishment, including the infamous Lancashire Witches trials. (5 of.

Malta loses a natural treasure, an enormous fiery vortex is seen in California and a mysterious radioactive hotspot is found near Chernobyl.

Explore the most dangerous hotel on the planet, check out the world's most fascinating beaches, visit a used car market in Benin and take a tour of a diamond mine in Russia.

Decoding Mayan texts, a physicist predicts a cataclysm will destroy the world. A NASA scientist makes an alien discovery.

Experts investigate whether a controversial union leader's disappearance is linked to the mob or if he went missing on his own accord.

The White House is one of the most-famous and most-haunted residences in the world. Experts investigate claims of extraordinary paranormal activity.

From loss of time and bizarre hazy memories, to terrifying accounts of alien surgery, these are the hidden signs of alien abduction.

Experts discuss the possibility of advanced alien technology that could allow UFOs to fly at blinding speed or hover effortlessly a few feet above the ground.

Are UFOs a threat to civil aviation? The culture of silence within the aviation industry could speak volumes. (5 of.

60 years on, Tony's close encounter has become an obsession. Meanwhile, pilot David presents photographic evidence of the UFO he almost crashed into whilst flying near area 51.

Texan farm workers are confronted by a 200-foot long object in the sky in 1957. In 1979, a UFO releases spiked spheres that leave a man unconscious in Scotland.

In 1980, soldiers encounter a luminous craft and dancing red lights in Suffolk. Witnesses report a metallic UFO hovering over water and crashing in Nova Scotia in 1967.

Andy visits Britain's oldest shop, drinks coffee with a corpse and discovers a 19th-century time machine hidden in an urban cemetery.

Dan explores the history of the Earls of Arundel, how knights fought in the Hundred Years' War and how the Castle would have prepared for Queen Victoria's 1846 visit. (6 of.

Bizarre markings are observed from space across the planet. Strange sightings point to conspiracies that could have global repercussions. Just what on Earth are they.

Malta loses a natural treasure, an enormous fiery vortex is seen in California and a mysterious radioactive hotspot is found near Chernobyl.

Explore the most dangerous hotel on the planet, check out the world's most fascinating beaches, visit a used car market in Benin and take a tour of a diamond mine in Russia.

Decoding Mayan texts, a physicist predicts a cataclysm will destroy the world. A NASA scientist makes an alien discovery.

Experts investigate whether a controversial union leader's disappearance is linked to the mob or if he went missing on his own accord.

The White House is one of the most-famous and most-haunted residences in the world. Experts investigate claims of extraordinary paranormal activity.

Bizarre markings are observed from space across the planet. Strange sightings point to conspiracies that could have global repercussions. Just what on Earth are they.

The cave's eerie acoustics have been associated with supernatural phenomena, earning it a reputation for connecting visitors to the spirit world.

A glacier preserves clues to a 1997 disappearance as frozen wildlife, a missing scientist and Ice Age finds reveal icy secrets.