Cities of the Underworld: Season 2
This season started on January 28, 2008. The table lists episodes with recorded air dates up to September 28, 2026.
| Ep | Title and air date | My place |
|---|---|---|
| 1 | Underground Apocalypse · 43 min | |
| 2 | Vietnam · 43 min | |
| 3 | A-Bomb Underground · 43 min | |
| 4 | Viking Underground · 43 min | |
| 5 | Hitler's Last Secret · 43 min | |
| 6 | Maya Underground · 43 min | |
| 7 | Mob Underground · 43 min | |
| 8 | Prophecies From Below · 43 min | |
| 9 | New York: Secret Societies · 43 min | |
| 10 | Washington D.C.: Seat of Power · 43 min | |
| 11 | Stalin's Secret Lair · 43 min | |
| 12 | Katrina Underground · 43 min | |
| 13 | Secret Soviet Bases · 43 min |
