• 00:20
    Secrets of the Underground
  • 01:10
    Sci-Trek
  • 02:00
    Kings of Construction
  • 02:48
    Mythbusters
  • 03:36
    How Do They Do It?
  • 04:00
    Food Factory
  • 04:24
    Secrets of the Underground
  • 05:12
    Sci-Trek
  • 06:00
    How Do They Do It?
  • 06:26
    Kings of Construction
  • 07:14
    Mythbusters
  • 08:02
    Sci-Trek
  • 08:50
    How Do They Do It?
  • 09:14
    Food Factory
  • 09:38
    Secrets of the Underground
  • 10:26
    Kings of Construction
  • 11:14
    Mythbusters
  • 12:02
    How Do They Do It?
  • 12:26
    Food Factory
  • 12:50
    Sci-Trek
  • 13:38
    Kings of Construction
  • 14:26
    Secrets of the Underground
  • 15:14
    Mythbusters
  • 16:02
    Sci-Trek
  • 16:50
    Kings of Construction
  • 17:40
    Mythbusters
  • 18:30
    Invent It Rich
  • 19:20
    How Do They Do It?
  • 19:45
    Food Factory
  • 20:10
    Sci-Trek
  • 21:00
    Invent It Rich
  • 21:50
    Kings of Construction
  • 22:40
    Mythbusters
  • 23:30
    How Do They Do It?
  • 23:55
    Food Factory
00:20

Secrets of the Underground

Rob Nelson investigates rumours of secret underground escape route used by infamous gangster Al Capone. Plus, mysterious earthen mounds in Washington State.