Cities of the Underworld S4E3
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Cities of the Underworld
S04E03 — America's Unmapped Murder Tunnels
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Cities of the Underworld

S04E03 America's Unmapped Murder Tunnels

2021-09-21

Don leverages cutting-edge mapping technology to reveal the sinister and perilous underground areas lurking beneath American urban landscapes. His investigation takes him deep into the criminal networks hidden below Portland, Oregon; Seattle, Washington; Chicago, Illinois; and Los Angeles, California.

Season 4 Episodes

1
Mayan Apocalypse
2021-09-07
 2
America's Military Underground
2021-09-14
 3
America's Unmapped Murder Tunnels
2021-09-21
 4
America's Ancient Ancestors
2021-09-28
 5
The Pirate Queen's Lair
2021-10-05
 6
Templars and The Founding Fathers
2021-10-12
 7
Secrets of the Ancient Metropolis
2021-10-19
 8
The Lost Aztec Colony
2021-10-26