MysteryX HD Wednesday

A trip to Great Smoky Mountains National Park, which straddles the border between North Carolina and Tennessee. It is the alleged underground base for a powerful secret society

Unexplained phenomena occurring at Big Bend National Park, where a series of incidents has convinced some that secret alien activities are taking place there

The Skull and Bones senior secret student society at Yale University, Connecticut, whose past members have become presidents, Supreme Court justices and heads of industry

Dr Fern Riddell and Dr Karen Bellinger examine Chichen Itza, a large pre-Columbian city built in the year 525 AC by the Maya people of the Terminal Classic period

Tori Herridge and a team of scientists piece together the lives behind the remains of over 100 young men found on the site of a proposed car park outside Andover, Hampshire

Theorists investigate whether extraterrestrials might have inspired Adolf Hitler to embark on a crazed quest for global domination, and try to track down the Fuhrer's alien secret

Investigating evidence that suggests the world's governments could be on the verge of announcing everything they know about UFOs

In the spring of 1952, reports of UFO sightings rose significantly. Former US Air Officials attempt to shed light on the possible causes

The documentary concludes with a look at the sighting of a UFO by pilot Milton Torres in 1957, when he was sent to shoot down an aircraft over the UK

A trip from New South Wales to the Western Australia metropolis of Perth. It's one of the most isolated cities in the world but, according to locals, UFO sightings are rife

The truth and lies behind ancient Egypt's best-known and loved icons, including the Great Sphinx, Tutankhamun, and the lost city of Tanis

Homicide detective Rod Demery and scientist Professor Turi King visit the ancient city of Verona, Italy, to examine the death of a 14th-century warlord

This latest collection of objects comprises an intriguing 35,000-year-old box, a steam-powered gun and a monument that may have been an Aztec throne

A trip to Great Smoky Mountains National Park, which straddles the border between North Carolina and Tennessee. It is the alleged underground base for a powerful secret society

Unexplained phenomena occurring at Big Bend National Park, where a series of incidents has convinced some that secret alien activities are taking place there

The Skull and Bones senior secret student society at Yale University, Connecticut, whose past members have become presidents, Supreme Court justices and heads of industry

Dr Fern Riddell and Dr Karen Bellinger examine Chichen Itza, a large pre-Columbian city built in the year 525 AC by the Maya people of the Terminal Classic period

Tori Herridge and a team of scientists piece together the lives behind the remains of over 100 young men found on the site of a proposed car park outside Andover, Hampshire

How recent discoveries are redefining spiritual, cultural and migration histories across continents and millennia

In China, a burial site reveals a child's remains marked with peculiar modifications. This raises questions about Chinese mortuary practices and more

Ancient remains, rare tools, a sabre-toothed kitten and a silver hoard reveal secrets of the past

Theorists investigate whether extraterrestrials might have inspired Adolf Hitler to embark on a crazed quest for global domination, and try to track down the Fuhrer's alien secret

A look at reports of alleged alien abduction, including cases in which abductees claim to have been subjected to torturous medical experiments

In the spring of 1952, reports of UFO sightings rose significantly. Former US Air Officials attempt to shed light on the possible causes

How recent discoveries are redefining spiritual, cultural and migration histories across continents and millennia

A trip from New South Wales to the Western Australia metropolis of Perth. It's one of the most isolated cities in the world but, according to locals, UFO sightings are rife

The truth and lies behind ancient Egypt's best-known and loved icons, including the Great Sphinx, Tutankhamun, and the lost city of Tanis

Homicide detective Rod Demery and scientist Professor Turi King visit the ancient city of Verona, Italy, to examine the death of a 14th-century warlord