MysteryX HD Saturday

An investigation into compelling UFO and alien cases by opening previously off-limits secret files. Does the mysterious Blue Planet Project hold the answers?

A selection of recently declassified FBI files provides new evidence for the debate over whether alien life really exists, and theorists claim the Vatican may be hiding the truth

The actor is joined by astrophysicist Sarah Cruddas to scrutinise an 2016 event in the village of Pentyrch, south Wales involving a vast triangular UFO and the RAF

Perplexing UFO encounters of recent times, focusing on a case in 2018 off the west coast of Ireland, in which pilots saw bizarre lights through their cockpit windows

Andy McGrath heads to Scotland, learning about a terrifying family of cannibals who used to prey upon weary travellers, and the prehistoric origins of the Loch Ness monster

Andy McGrath joins a team of Nessie experts and volunteers to carry out the biggest search for the Loch Ness Monster in 50 years

Dan Jones explores the history of Dover Castle, revealing that Henry II ordered its construction partly out of guilt for the murder of Thomas Becket

Dan Jones explores the history of Warwick Castle, which was established by William the Conqueror in 1068 and transformed into a stone fortress two centuries later

Documentary series focusing on six unfathomable mysteries - from a gigantic tsunami that never hits land, to a sinister blood-red lake in war-torn Baghdad

The series telling the stories behind remarkable satellite images continues, focusing on strange barren rings in the Namib Desert and a lost city in the heart of the Amazon

Experts examine the possibility that life began on Mars and travelled to Earth, and assess the plans aliens may have in store for the human race if they really do exist

Experts open previously off-limits secret files in a bid to answer some of the most mysterious questions surrounding UFOs and extraterrestrial life

The discovery of a mysterious 500-year-old manuscript, with almost 300 pages full of handwritten notes and illustrations

A further look at some of the world's most strange unexplained phenomena. This episode looks at the disappearance of union official Jimmy Hoffa in July 1975

Washington State holds the United States' highest rates of UFO sightings per capita. With a new report made every 55 hours, why are UFOs choosing to hover here?

Patterns in UFO and UAP sightings across the world. A strange formation is seen in the sky over the sleepy suburbs of Tinley Park, Illinois

Documentarian Seth Breedlove joins groups like The North American Wood Ape Conservancy and The Ohio Night Stalkers as they seek evidence of the creature's existence

How and why humans have become frozen in time, from missing Second World War aircraft to a frozen lake filled with human remains

Washington State holds the United States' highest rates of UFO sightings per capita. With a new report made every 55 hours, why are UFOs choosing to hover here?

The actor is joined by astrophysicist Sarah Cruddas to scrutinise an 2016 event in the village of Pentyrch, south Wales involving a vast triangular UFO and the RAF

Perplexing UFO encounters of recent times, focusing on a case in 2018 off the west coast of Ireland, in which pilots saw bizarre lights through their cockpit windows

An investigation into compelling UFO and alien cases by opening previously off-limits secret files. Does the mysterious Blue Planet Project hold the answers?

A selection of recently declassified FBI files provides new evidence for the debate over whether alien life really exists, and theorists claim the Vatican may be hiding the truth

When mysterious structures are discovered deep in a remote forest, experts investigate if this strange site was the long-lost birthplace of a top-secret Nazi project

Experts investigate why so many UFO sightings take place in Los Angeles, and believe the answer may lie underwater