NASA's Unexplained Files

Explore the world’s most fascinating, strange and inexplicable mysteries. Each episode features compelling contributions from scientists,...

An FBI cold case that has laid dormant for 70 years, leads a group of world-renown investigators on the ultimate manhunt to finally answer the...

Four episodes chronicle a mysterious phantom who appears in the Musée du Louvre in Paris at night. Neither guards nor police are able to make...

Delve deep into a vast archive of over 70,000 UFO files gathered over nearly half a century in Hangar 1. MUFON, an independent organization dedicated...

Ten years ago, a mysterious spatial anomaly now known as "Heaven's Gate" appeared in South America, shortly followed by the opening of "Hell's Gate"...

Stephen Ezard's search for the truth about the death of his brother Michael catapults him into an international conspiracy and a passionate love...

Conspiracy theories are often created to help people make sense of our complex world – but can they stand up to scientific investigation?...

Peter Verås is an uncompromising journalist in the most respected newspaper in Norway. He makes his life’s biggest mistake when he gets...

Have you ever wondered what goes on behind the scenes of the most legendary monuments and powerful organizations in the United States?...

A users' guide to the cosmos, from the Big Bang to galaxies, stars, planets and moons: where did it all come from and how does it all fit together? A...

Satellites orbit Earth at 17,000 miles an hour, capturing images of our world that are breathtaking, but some are bizarre. This unique perspective...

Ben Hansen is on a mission to uncover the truth behind UFO sightings across America. With unprecedented access to the archives of famed ufologist Dr....

From murder and espionage to terrorism and stolen submarines, a team of special agents investigates any crime that has a shred of evidence connected...

Hundreds of cash-strapped players accept a strange invitation to compete in children's games. Inside, a tempting prize awaits — with deadly...

After the fall of the Galactic Empire, lawlessness has spread throughout the galaxy. A lone gunfighter makes his way through the outer reaches,...

A group of vigilantes known informally as “The Boys” set out to take down corrupt superheroes with no more than blue-collar grit and a...

Seven noble families fight for control of the mythical land of Westeros. Friction between the houses leads to full-scale war. All while a very...

When a young boy vanishes, a small town uncovers a mystery involving secret experiments, terrifying supernatural forces, and one strange little girl.

The true story of one of the worst man-made catastrophes in history: the catastrophic nuclear accident at Chernobyl. A tale of the brave men and...