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Ancestral Wisdom: The Roaches and Millers connect to their ancestral heritage by continuing on with traditions that have been passed down for thousands of years. (S3, ep 2)

Spiced And Loaded: HSI follows a car transporting meth, while CBP finds drugs in secret vehicle compartments in El Paso and seizes looted Ukrainian antiquities at JFK. 7+. (4 of 8)

Blow Overboard: MO agents in Puerto Rico and a marine unit in St Thomas partner to capture a fleeing boat and recover the $2.5 million worth of cocaine. 7+

Oil City, Pennsylvania Bank: The team salvage elegant furnishings and historic gems, as they search a former bank that once held the fortunes of rich oil barons. (S1, ep 8) 7+

Connecticut Ghost Town: Follow shrewd scavengers and refurbishers as they search long-abandoned buildings for items of high value or huge historical importance. (S1, ep 9) 7+

Gold Bars: Get an insider's look at the making of polenta crisps, Alfredo risotto, Caribbean-inspired candy bars, and maple Danish pastries. (S4, ep 2) 7+

Shaken Not Stirred: Discover the secret behind instant fruit smoothies, almond chocolate bars, wasabi horseradish mustard, and more... (S4, ep 3) 7+

The Great Race: Charlotte and Petal go shopping for new territory. Gnash goes head-to-head with Carl and Champ in an eating contest as they get ready for hibernation. (S1, ep 11) 7+

The Big Sheep: As winter hits, a gang of deadly predators puts every dog on high alert. Pelt says goodbye to the flatlands in order to find his place in the world. (S1, ep 12) 7+

Teleshopping.

Teleshopping. 7+

Teleshopping.

Engineering: In this special episode, we'll take a spectacular aerial tour highlighting Europe's engineering prowess from a vantage point that is rarely seen. (S4, ep 2) 7+

Bad Data: Bad data can be deadly. When a Stealth Bomber crashes at a US Air Force base, it becomes the most expensive aviation disaster ever. (S6, ep 3) 7+

The Bismarck: A look at the war strategy and catalogue of errors that led to the British sinking of the Bismarck, a wreck that killed more than 2,000 German soldiers in 1941. 7+

Defying Rommel: The story of HMS Upholder and HMS Unbeaten - two British submarines who unknowingly took aim at each other while hunting Italian supply ships. (S2, ep 4) 7+

Operation Market Garden: It's 1944, and the Allies have launched a daring attack on the Nazi-occupied Netherlands in a bid to bring World War II to an end. 7+

Landing at LAX, US Air 1493 collided with another aircraft and burst into flames. 21 passengers were unable to escape - investigators need to figure out why. 7+

Pitch Black: Join investigators as they uncover two key factors that led to an Illinois turboprop's horrific crash - a fatal assumption and deadly decision. (S21, ep 8) 7+

Enemy Allies: With Hitler dead, an American Tank commander leads a race to save VIP prisoners from a castle in the Alps. But when loyal Nazis strike, they struggle to hold out.

Drain the Viking Seas: Off the coast of Sweden, can experts find the battleship the Mars, which vanished over 450 years ago and is shrouded in legend and mystery? 7+

A Night of Havoc: A salmon truck crashes and sparks a night of havoc, as Thord and Bjorn attempt to rescue the valuable load. Plus, rookie Domenic embarks on a solo mission. (S9, ep 2) 7+

Kamikaze Suicide Bombers: Attention turns to one of the most fearsome weapons of war, the Kamikaze, a tactic explored by the Nazis and perfected by the Japanese. 7+

Blind Landing: On 6 August 1997, Korean Air Flight 801 crashed before landing, killing over 200 people, caused by a series of errors by the pilot and airline. (S4, ep 4) 7+

Crash In the Alps: En route from Barcelona to Dusseldorf, Germanwings Flight 9525 is flying to the French Alps when an air traffic controller spots something wrong. (S15, ep 7) 7+

Crashed And Missing: On 20 January 1992, Air Inter flight 148 began its descent into Strasbourg. Amid bad weather it hit a mountain, prompting a search for survivors. (S8, ep 7) 7+

Three real world disasters forensically dissected. Fukushima nuclear plant, a Manhattan crane collapse, the fire on aircraft carrier USS Forrestal. 7+. (7 of 8)

Deadly Test: Experts investigate why XL Airways Germany Flight 888T spiralled into the Mediterranean sea in 2008. What deadly flaw was the Airbus hiding? 7+