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Examining claims that extraordinary discoveries are being ignored by the scientific community for not conforming to their accepted paradigm.

In the wake of the First World War, Adolf Hitler identifies Benito Mussolini as his model and has one ultimate goal: to gain power in Germany.

Racing an incoming hurricane, Darrell and his team are forced to make tough choices - but they finally locate the source of a massive magnetometer hit.

During WWII, the French Resistance seeks aid from SOE. Led by Vera Atkins, Odette Sansom and Noor Inayat Khan fight the Nazis, risking it all for victory. (1 of.

Ancient Astronaut theorists suggest that aliens have been guiding mankind in secret to bring about huge leaps in technological advancement.

Examining claims that extraordinary discoveries are being ignored by the scientific community for not conforming to their accepted paradigm.

Another visit to the north for Alice, checking out evidence of early writing by the Picts in Scotland and a 3,000-year-old Bronze Age coffin.

Excavations in southern England uncover a lost Roman town, a Tudor ship and evidence of Henry VIII's financial forgery at the Tower of London.

Arthur's Stone and a Georgian Mine: In the west of the UK, explore a spectacular monument older than Stonehenge, a 200-year-old mine trapped in time and a lost medieval friary.

Headless Romans and Anglo Saxon Gold: Explore a gatehouse full of Civil War bullets, an Iron Age shield made from bark and Roman burials with pots where the heads should be.

Mystery Shipwreck and a Roman Army Camp: Alice Roberts reveals a Dutch ship sunk by the English, a Cornish Roman fort and a 5,000-year-old Neolithic monument.

Crocodile Monster, Tiktok USO, and Ghost Dog Collar Removal: The team investigate a legendary man-eating croc, glowing lights in Mexico and chilling footage of a pair of dogs.

Racing an incoming hurricane, Darrell and his team are forced to make tough choices - but they finally locate the source of a massive magnetometer hit.

In a world without humans, water turns from life-giver to destroyer, flooding cities, collapsing dams and triggering ancient forces long kept at bay.

First Bigfoot Photo, Howl of the Beast and UFO at Coronation: Is a picture taken in the 1890s the first Bigfoot photo ever.

Exploding Whale, Alligator Attack, Dallas Airshow Disaster and Ski Lift Mayhem: Tony Harris breaks down the most shocking moments ever caught on camera.

Ancient Astronaut theorists suggest that aliens have been guiding mankind in secret to bring about huge leaps in technological advancement.