National Geographic Channel

'S7/E11'. In this episode we learn the science behind the fails, when bouldering on rock faces, doing flips on wakeboards or diving into foam pits.

'S7/E12 of 20'. In this episode we learn the science behind the fails, when 'mud bogging' in off-roaders, dancing in circles or riding undersized bikes.

'S1/E1 - Germany: The Witch Hunts Begin'. The brutal Trier witch trials and the origins of witch-hunting.

'S1/E5 of 6 - Germany'. Embark on a thrilling journey through Germany's greatest feats of engineering.

'S1/E2 of 8 - Winter Is Coming'. The NWS homesteaders race to finish their projects before winter fully sets in.

'S1/E6 of 10 - Sky'. This episode follows the stories of terrifying lightning strikes.

'S4/E5 of 10 - Blow Overboard'. AMO agents in Puerto Rico chase a fleeing boat carrying $2.5 million worth of cocaine.

'S4/E3 of 10 - Fire Fight'. In June, 1983, a small mechanical problem in the back of a Canadian aircraft quickly led to an all-out emergency. Thick, toxic smoke filled the plane before it burst into flames, killing 23 people.

'S1/E7 of 10 - Tornados'. Tornadoes are no longer contained in Tornado Alley.

'S1/E2 - Scotland: The King and the Witches'. The terrifying true story of the first major witch trials in Scotland.

'S4/E5 of 14'. In this episode we learn just how many ways there are to embarrass, injure and humiliate yourself while volcano boarding, swinging on a trapeze, or off-roading in a tiny toy car.

'S4/E6 of 14'. In this episode we learn just how many ways there are to embarrass, injure and humiliate yourself while jumping off a boat, cornering on a bicycle or simply attempting a tablecloth pull.

'Lost Treasures of the Bible: Secrets of Faith. S2/E6 of 6 - Secrets of the Ark of the Covenant'. Archaeologists hunt for the truth about Exodus and the Ark of the Covenant.

'S1/E8 of 8 - Patrick Weninger'. A CIA officer must trust an al-Qaida mole and fight to keep him alive.

'S1/E6 of 6 - Poland'. Venture into the heart of Poland's most awe-inspiring engineering marvels.

'S1/E3 of 8 - Snow Is A Boon'. Winter has arrived, and the NWS homesteaders must face a new set of backwoods challenges.

'S4/E7 of 10 - MDMA On The Move'. CBP discovers abandoned fentanyl in Texas while HSI tracks an ecstasy package in Chicago.

'S4/E4 of 10 - Risky Runways'. August 6, 1997. Korean Air flight 801 departed from Seoul, Korea. It had been cleared to land at AB Won Guam Airport, Agana when it crashed about three miles south-west of the airport.

'S1/E3 of 4 - Superskilled with Eva Zu Beck: Hunting and Gathering with the Hadza'. Eva attempts to survive on her own in the bush like the Hadza hunter-gatherers.

'S2/E1 of 2 - Rescued at Sea'. The Dutch Caribbean Coast Guard performs search and rescue operations.

'S10/E3 - The Pill-Packing Pilot'. AMO chases a boat tossing cocaine overboard. CBP seizes pills from a pilot.

'S5/E4 - The Great American Rehab Scam'. Mariana investigates the dirty business of bogus addiction treatment.

'S3/E7 of 10'. Las Vegas isn't called Sin City for nothing. Whether you're a visitor, a resident, or a recent transplant, the culture of sex, drugs and violence is hard to avoid.

'S1/E13 of 13 - Al Qaeda Ambush'. US Navy SEAL Neil Roberts prepares for a mission in south-east Afghanistan. US advanced technology indicates the area is clear, but an enemy rocket-propelled grenade hits the chopper.

'S1/E3 of 4 - Superskilled with Eva Zu Beck: Hunting and Gathering with the Hadza'. Eva attempts to survive on her own in the bush like the Hadza hunter-gatherers.