Information
First Air DateFebruary 14, 2017
Last Air DateDecember 16, 2017
Seasons2
Episodes16
Runtime1h 0m
StatusEnded
NetworkScience
4.3
3 votesPopularity1
Secrets of the Underground
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.