Season 15
12 episodes · Nov 26, 2025
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S15E1Japan's Poison Island
Nov 26, 202544mExploring a complex in New Jersey infiltrated by a notorious gang, a tranquil Japanese island with a poisonous legacy, and a top-secret bunker in Lithuania raided in the name of freedom.
S15E2Hitler's Fortress of Fury
Dec 3, 202544mExploring a serene institution in Wisconsin seized out of righteous anger, a Spanish settlement stained in innocent blood, and a subterranean lair in France with a disturbing objective.
S15E3The Nazi's Last Stand
Dec 10, 202544mExploring Nazi towers in Berlin that were defended to the bitter end by child soldiers, a Chicago institution that was the largest of its kind, and an odd vision in the Malaysian jungle.
S15E4Suicide Island
Dec 17, 202544mExploring a Dover stronghold transformed during an unprecedented crisis, and a top-secret site in Japan used for wartime missions of no return.
S15E5London's Burning
Dec 24, 202544mExploring a towering structure in London on the banks of the river Thames, witness to the city's darkest days, and a Wisconsin farmstead that brewed up a storm.
S15E6Cold War Cover Up
Dec 31, 202544mExploring a top-secret military base in Michigan linked to an unexplained disappearance, and a California transportation hub that inspired lasting change.
S15E7Escape from Dunkirk
Jan 7, 202644mExploring the nerve centre of a heroic rescue mission in England, a dilapidated mansion in Virginia raided during the Civil War, and a facility in Detroit where a champion made his name.
S15E8The Invisible Enemy
Jan 14, 202644mExploring a top-secret facility in Scotland besieged by militant protesters, and a small Greek island caught in a chilling web of controversy.
S15E9Agent Zigzag
Jan 21, 202644mExploring a Philadelphia venue that set the stage for era-defining artists, a French compound where a staggering deception was launched, and a the scene of a baffling crime in Malaysia.
S15E10Peru's Massacre Island
Jan 28, 202644mExploring a remote Peruvian island besieged by a violent rebellion, a refuge in Nevada that offered hope to its occupants, and a French worker's paradise seized by an invading force.
S15E11Churchill's Folly
Feb 4, 202644mExploring a secret New Jersey facility infiltrated by a Soviet spy ring, an island stronghold besieged by the Nazis, and a palatial compound in Peru frequented by the country's elite.
S15E12Churchill's Shadow War
Feb 11, 202644mExploring a secret subterranean network in London that inspired James Bond author Ian Fleming, and an Italian country retreat that was designed to brainwash a generation of children.