Mysteries of the Abandoned: 4×4: 4x4
Labyrinth of the Dead
Tunnels filled with human bones lie beneath the streets of Paris, and this horrifying engineering marvel points to a dark secret; new discoveries reveal why this grisly underground death maze was built and why it was abandoned.
4 - 1World's Strangest Ghost Towns Apr. 07, 2019
4 - 2Secret of Supervillain Island Apr. 11, 2019
4 - 3Escobar's Castle Apr. 18, 2019
4 - 4Labyrinth of the Dead Apr. 25, 2019
4 - 5Treasure Of Outlaw Valley May. 02, 2019
4 - 6Alaska's Fort Apocalypse May. 09, 2019
4 - 7Alien Hell Portal May. 16, 2019
4 - 8Pompeii's Gate To Hell May. 23, 2019
4 - 9Haunting On Plague Island May. 30, 2019