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World War Two. Nazi Germany’s U-boats bring Britain to the brink of starvation by sinking their merchant ships in the North Atlantic. The U-Boats’ tactics are a closely guarded secret and the Royal Navy struggle to defeat them.

U-Boat Wargamers

Never-before-broadcast UFO and alien stories, told by eyewitnesses. Experts and debunkers weigh in as events unfold. Featuring corroborating accounts, photo evidence, and hypnotic regression to uncover missing time. Are we alone?

UFO Encounters UK

A team of experts travels to the sites of reported UFO encounters to conduct in-depth investigations regarding the incidents.

UFO Hunters

Ultimate Power Ballads

The documentary series takes the viewer behind the scenes, showing how these technical masterworks were created, and how they prove themselves on the job day in and day out.

Ultimate Vehicles

Hosted by Robert Stack, this series uses re-enactments and interviews to retell the circumstances of mysteries that remain unsolved. Covering crimes, paranormal events, tales of lost love, unexplained history, and ufo's.

Unsolved Mysteries

Hosted by Dennis Farina, this series retells the circumstances of, well, mysteries that are unsolved. Covering crimes, unexplained history and paranormal events, viewers are encouraged to call in with information that might solve the mystery.

Unsolved Mysteries with Dennis Farina

Unsolved Mysteries: Alcatraz

This episode includes: Belgian UFO, (Pts. 1 & 2), UD: I.D. Swap, Brenda's Fire and Philip Breen & UD.

Unsolved Mysteries: Belgian UFO

This episode includes: Fatima (Pts. 1, 2 & 3), Log Cabin Fraud & UD, UD: If the Truth Be Known and Missing Cheek.

Unsolved Mysteries: Fatima

This episode includes: Ghostbusters, Roubas: Dead or Alive?, Elysian Park Treasure, Soldier Alexander and UD: Jail Family.

Unsolved Mysteries: Ghostbusters

This episode includes: Kecksburg UFO (Pts. 1 & 2), Update: Pizza Man & 3rd Anniversary Reunion, Unknown Arsonist & UD and Hospital Babynap.

Unsolved Mysteries: Kecksburg UFO

This episode includes: Martin Luther King (Pts. 1 & 2), Surprise Sister & UD and Texas Most Wanted & UD.

Unsolved Mysteries: Martin Luther King

This episode includes: Scared to Death, Texas UFO, Butch Cassidy and Sibling Search & UD.

Unsolved Mysteries: Texas UFO

This episode includes: UFO Odyssey, Reporter's Trucker and Haunted Mansion.

Unsolved Mysteries: UFO Odyssey

Intense true stories demonstrate the dramatic nature of medicine practiced under pressure. See how a doctor's personal blend of expertise, coolness under fire, and decision-making ability are challenged by unpredictable circumstances.

Untold Stories of the ER

These true stories demonstrate the dramatic nature of medicine practiced under pressure, where every moment can be a turning point. See how a doctor's personal blend of expertise and decision-making ability are challenged by unpredictable circumstances.

The dominance of air has always been in the mind of men, but nature only gave the gift to flight to certain animals. Amongst these, to the insects. Thanks to their wings, the insects have conquered most parts of the planet’s diverse environment.

Unusual World

The series is hosted by noted physicist and futurologist Dr. Michio Kaku of the City University of New York. 'Update' fast-forwards to the mid 21st century to show us which scientific breakthroughs will make their way into our lives.

Update - The World in 50 Years

The truth behind the world's most riveting scandals and crimes as covered by the iconic magazine.

Vanity Fair Confidential

Historical observational documentary series following a team who live the life of Victorian Farmers for a year.

Victorian Farm

Filmed in and around the Acton Scott Estate in Shropshire Ruth, Peter and Alex return to the Estate to tackle an array of new farming tasks; to explore life in the wider working countryside.

Victorian Farm: Christmas Special

In 1831, Charles Darwin began the most important scientific journey ever made, discovering what changed our ideas of time, space, chance, sex and nature. 180 years later his great-great-granddaughter repeats his voyage. How has Darwin's world has changed?

Voyage of Darwin's Beagle: On the Future of Species

This series tracks the US Army Air Force from preparation to WWII victory. Evolving to face European and Pacific threats, it aids in defeating Nazi Germany and Imperial Japan through strategic partnerships and relentless determination.

Documentary Shows A-Z

All Documentary Shows A-Z, listed alphabetically