1. Lake Monsters

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. 23 October 2005. 40 min

From Scotland's Loch Ness to Vermont's Lake Champlain, witnesses tell terrifying tales of prehistoric, long-necked creatures that inhabit the waters.

2. Signs

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. 23 October 2005. 40 min

This episode features large images that are visible only from the air, like crop circles, Stonehenge, and the Nazca Lines.

3. Bigfoot

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. 6 January 2006. 40 min

This episode features research on Bigfoot in Northern California, Texas, and Florida, where it's known as Skunk Ape.

4. Cryptid Creatures

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. 13 January 2006. 40 min

The Loch Ness Monster, The Lake Champlain Monster, Bigfoot, Mothman, and the Jersey Devil are all investigated, including the Men in Black's involvement with Mothman.

5. Mystery Spots

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. 20 January 2006. 40 min

This episode features the mysteries of Machu Picchu, Peru and Sedona, Arizona.

6. Alien Encounters

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. 27 January 2006. 40 min

This episode features people who witnessed alien encounters around the world.

7. The Quest for the Holy Grail

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. 25 May 2006. 40 min

From the magnificent carved symbols of Scotland's Rosslyn Chapel to mysterious codes hidden in books and monuments across England, we’ll track down secret clues to find out what the Holy Grail actually is and where it might be concealed.