
S02 Episode 1
Underground Apocalypse
42 mins · Wed, 23 Jan 2008

S02 Episode 2
Vietnam
42 mins · Mon, 4 Feb 2008

S02 Episode 3
A-Bomb Underground
42 mins · Mon, 11 Feb 2008

S02 Episode 4
Viking Underground
42 mins · Mon, 25 Feb 2008

S02 Episode 5
Hitler's Last Secret
42 mins · Mon, 3 Mar 2008

S02 Episode 6
Maya Underground
44 mins · Mon, 10 Mar 2008

S02 Episode 7
Mob Underground
44 mins · Mon, 17 Mar 2008

S02 Episode 8
Jerusalem
43 mins · Mon, 24 Mar 2008

S02 Episode 9
New York: Secret Societies
41 mins · Mon, 31 Mar 2008

S02 Episode 10
Washington, D.C.: Seat of Power
42 mins · Mon, 14 Apr 2008

S02 Episode 11
Stalin's Secret Lair
42 mins · Mon, 21 Apr 2008

S02 Episode 12
Katrina Underground
43 mins · Mon, 28 Apr 2008

S02 Episode 13
Secret Soviet Bases
42 mins · Mon, 5 May 2008