12 episodesFirst aired 5 September 2022
E1Sept 202243m
Explore Oradour-sur-Glane, a French town drenched in infamy, the victim of a notorious raid, Alcatraz, a facility famed for breakouts, subjected to a daring break-in, and Sealand, a micronation off the English coast, stormed by a band of mercenaries.
E2Sept 202243m
The Tunnels of Gibraltar were a Second World War espionage base, hidden in the Rock of Gibraltar, which lay undiscovered for decades. At Atlas-1 Test Site, are the remains of an ingenious US Airforce project that continues to keep people safe.
E3Sept 202243m
Exploring a series of vaults, hidden from view in Edinburgh, Scotland that tell a murky story of opportunity, crime and destitution.
E4Sept 202243m
Exploring the remains of an ingenious sky-high solution to a ground-based problem, Chiatura, once know as the Venice of the air
E5Oct 202243m
Exploring Agdam, a city in Azerbaijan raised to the ground in a conflict decided by a new weapon of war.
E6Oct 202243m
Exploring an industrial ruin in the Florida Everglades that once competed in the greatest race humankind has ever witnessed.
E7Oct 202243m
Exploring traces of a mass deception hidden at Ponte Dirillo in Italy, as well as a once lavish theatre in Ohio and an ancient city with a poisonous secret.
E8Oct 202244m
Explores a dense forest near the Czech capital of Prague that hides Houska Castle, an eerie keep that has been subject to long-standing rumours that it possesses supernatural powers.
E9Oct 202244m
Exploring Serbia, Fort Pike in Louisiana, and a mountainside refuge in Georgia that was revealed to the world by an act of God.
E10Nov 202244m
Exploring a grand structure in Hull that was reduced to rubble by Hitler's planes, Casa Albero in Italy, USS Hornet in California and the Sofia tunnels.
E11Nov 202243m
Exploring a decrepit Liberian landmark with American origins, a desolate town in Belgium and a pioneering scientific structure in Cleveland.
E12Nov 202244m
Exploring the Dew Drop Inn in New Orleans that dared to take on the authorities and paid the price and Belgica Fort, built to defend an unlikely treasure.
