Seasons and episodes
1Season 1 Feb. 14, 2017
1 - 1Capone's Escape Tunnels Feb. 14, 2017
2Season 2 Oct. 28, 2017
- There are still no episodes this season
Video trailer
Synopsis
A search for an underground escape route said to have been used by Al Capone. Also: who or what built earthen mounds in Washington state.
Original title Secrets of the Underground
TMDb Rating 4.3 3 votes
First air date Feb. 14, 2017
Last air date Dec. 16, 2017
Seasons 2
Episodes 16
Average Duration 60 minutes
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