MysteryX HD Sunday

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

Previously sealed documents hint at compelling new theories about extraterrestrials as experts question whether former US presidents may have been concealing the truth

Craig and space journalist Sarah Cruddas consider incidents over the US that it has been suggested are being covered up by the Pentagon

Craig joins forces with journalist Sarah Cruddas to investigate some perplexing UFO encounters. Here the duo recall the infamous Rendlesham Forest incident of 1980

Andy McGrath embarks on a mission to unearth the Cornish sites of King Arthur and tries magnet fishing for the mythical sword Excalibur

Andy McGrath returns to Cornwall, where he meets a real-life mermaid, stalks a local churchyard for owl men and faeries, and stops off at a haunted smugglers' inn

Dan Jones explores the turbulent history of the Tower of London, which has been a military fortress, a palace, a royal mint, a prison, a zoo and a place of execution

Dan Jones heads to Gwynedd to explore the history of Caernarfon Castle, the military importance of which faded at the end of the 15th century when Henry Tudor became king

Photographs of a 25-mile structure known as the eye of the Sahara, and an extraordinary cloud emanating from an island in the Indian Ocean

The series examines six more mysterious satellite images, including a possible smokescreen over North Korea, and two forgotten pyramids in Egypt

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

A countdown of the top 10 most interesting reported alien encounters

Looking at some of the world's most strange unexplained phenomena. This episode explores phenomena surrounding air disasters associated with the number 191

Looking at the bizarre trend in Ireland in the 1980s when thousands of people started seeing religious statues move

Science and the supernatural, focusing on the discovery of the 'fairy coffins' - 17 miniature coffins containing carved figures located in Edinburgh in 1836

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

Some of the most shocking cases connected with the regime's bloody reign, beginning with the case of Hitler's niece Geli Raubal, who was found dead in his apartment in 1931

The murder in 1943 of businessman Sir Harry Oakes in the Bahamas, where the Duke of Windsor was governor at the time, and implicated in influencing the outcome of his murder trial

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

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

Craig and space journalist Sarah Cruddas consider incidents over the US that it has been suggested are being covered up by the Pentagon

Craig joins forces with journalist Sarah Cruddas to investigate some perplexing UFO encounters. Here the duo recall the infamous Rendlesham Forest incident of 1980

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

Previously sealed documents hint at compelling new theories about extraterrestrials as experts question whether former US presidents may have been concealing the truth

When instruments on the International Space Station malfunction, experts investigate if this behaviour is more than a tech glitch but a prophecy of doomsday

Nubian pyramids reveal the rise of female power in Ancient Kush. Plus, a shocking satellite image uncovers secrets of an ancient ancestral Puebloan site in New Mexico