National Geographic Nazi Underworld: Hitler's Architect (2012)

Historian Chris Skidmore explores shocking evidence suggesting that Elizabeth I's dangerous secret love life led to cold-blooded murder.

Earth's Giant Hole Professor Darryl Granger explores China's tiankengs - giant natural holes, hundreds of metres deep, which have developed in unusual environmental conditions.

Imagine you're lost at sea…what scares you the most? Exposure? Exhaustion? Or…sharks? In Surviving Shark Night, Mike Rutzen lives out one of our greatest primal fears. He dumps himself in three shark hotspots, with one ultimate goal…to survive a night in the water with great white sharks.

A fascinating exploration of the legends accredited to the mysterious religious and military order of the Knights Templar.

The typical image of modern Japan is one of a neon-lit, high-tech futuristic society crammed into skyscraper-strewn cities. But just a short way out from the bustling human hotspots lies a completely different country.

Take a tasty adventure across the world from behind the scenes of the biggest kitchens on the planet.

Why is a small region of China home to an extraordinary number of giant holes containing vast, little explored subterranean forests? One professor is on a dangerous mission to find out.

Follow the meteoric rise and grisly fall of Julius Caesar, whose combination of genius, ego and ambition changed the Greco-Roman world forever.