Secrets of the Underground background
Secrets of the Underground poster

Secrets of the Underground

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.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.

Starring

It's a reality and documentary show, and has a rating of 6.4 out of 10 from Imdb which is usually fine for this kind of show.

Watch it here

Not found streaming from Denmark.

More like this

Broken Trust
Broken Trust (2018)
6.9Documentary 

10 episodes on
MAX
The Wonderland Murders
The Wonderland Murders (2018)
6.9Crime 

12 episodes on
Discovery+
90 Day Fiancé: Before the 90 Days
90 Day Fiancé: Before the 90 Days (2017)
6.8Reality 

140 episodes on
MAX
Impossible
Impossible (2017)
7Reality 

23 episodes on
Disney+ +1
Horror at the Cecil Hotel
Horror at the Cecil Hotel (2017)
6.8Crime 

4 episodes on
Discovery+
Disney's Fairy Tale Weddings
Disney's Fairy Tale Weddings (2017)
6.8Documentary 

18 episodes on
Disney+
Devil's Canyon
Devil's Canyon (2017)
7Documentary 

6 episodes on
Discovery+
Astralis - mod stjernerne
Astralis - mod stjernerne (2017)
6.8Documentary 

3 episodes on
DR TV
A Wedding and a Murder
A Wedding and a Murder (2018)
6.8Reality 

20 episodes on
Hayu
In Ice Cold Blood
In Ice Cold Blood (2018)
6.8Reality 

41 episodes on
Hayu
Buried In The Backyard
Buried In The Backyard (2018)
7Reality 

77 episodes on
Hayu
Just Another Immigrant
Just Another Immigrant (2018)
7Drama 

10 episodes on
SkyShowtime
The Lake Erie Murders
The Lake Erie Murders (2018)
7Crime 

18 episodes on
MAX
Battlefish
Battlefish (2018)
7Reality 

8 episodes on
Netflix
The Night That Didn't End
The Night That Didn't End (2018)
7Crime 

12 episodes on
Discovery+
An error has occurred. This application may no longer respond until reloaded. Reload 🗙