| Series cast summary: |
 | Piers Gibbon | - | Himself - Host 1 episode, 2011 |
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| Mark Keller | - | Himself - Narrator 1 episode, 2011 |
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 | Craig Sechler | - | Himself - Narrator 1 episode, 2011 |
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| Benny | - | Himself - Samo Translator 1 episode, 2011 |
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| Gerry Moffatt | - | Himself - Explorer 1 episode, 2011 |
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| Dafu | - | Himself - Arrow Maker 1 episode, 2011 |
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| William Whatley | - | Himself - Colorado Witness 1 episode, 2011 |
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| Bobby | - | Himself - Biami Translator 1 episode, 2011 |
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| Michael Dailey | - | Himself - Wyoming Witness 1 episode, 2011 |
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| Dorsey Armstrong | - | Himself - Wyoming Witness 1 episode, 2011 |
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| Tom Hoey | - | Himself - Missionary 1 episode, 2011 |
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| Ken Avinon | - | Himself - Forest Protection Officer 1 episode, 2011 |
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| Solomi Hoey | - | Herself - Missionary 1 episode, 2011 |
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| Cindy Avinon | - | Herself - Ken's Wife 1 episode, 2011 |
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| Bigelei | - | Himself - Biami Fight Leader 1 episode, 2011 |
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| Jeffrey Meldrum | - | Himself - Researcher, Idaho State University 1 episode, 2011 |
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| Tidikawa | - | Himself - Biami Song Leader 1 episode, 2011 |
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| Dawei | - | Himself - Christian Pastor 1 episode, 2011 |
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| Reba Jo Teran | - | Herself - Eastern Shoshone Tribe 1 episode, 2011 |
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| Dawa | - | Himself - Sherpa 1 episode, 2011 |
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| Ian Redmond | - | Himself - Primatologist 1 episode, 2011 |
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| Lhakpa Dolma | - | Herself - Yeti Attack Victim 1 episode, 2011 |
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| John A. Bridegroom | - | Knight Templar 1 episode, 2011 |
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 | Reg E. Cathey | - | Himself - Narrator 1 episode, 2011 |
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 | Harry Chase | - | Himself / - 1 episode, 2011 |
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 | Tom Dwyer | | 1 episode, 2011 |
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| Whitey Evans | | 1 episode, 2011 |
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| Brandon Eyre | | 1 episode, 2011 |
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| James Francis | | 1 episode, 2011 |
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 | Tony Gerber | - | Himself / - 1 episode, 2011 |
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| Everett Howell | - | Prisoner & Franklin's Assistant 1 episode, 2011 |
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| Alex Inglish | | 1 episode, 2011 |
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 | Michael Izquierdo | - | Himself / - 1 episode, 2011 |
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| Charlie Jiminez | | 1 episode, 2011 |
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| Chad Kiesel | | 1 episode, 2011 |
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| Molly Larsen | | 1 episode, 2011 |
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| Paco Linares | | 1 episode, 2011 |
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| Alastair Lumsden | | 1 episode, 2011 |
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| Aaron May | - | Himself / - 1 episode, 2011 |
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 | William Myers | | 1 episode, 2011 |
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| David Olson | | 1 episode, 2011 |
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| Alan Peterson | - | Himself / - 1 episode, 2011 |
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| Bray Poor | - | Himself - Narrator 1 episode, 2011 |
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| Celeste M. Sherry | | 1 episode, 2011 |
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| Jack Sherry | - | Ben Franklin 1 episode, 2011 |
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| Roger Tilling | - | Narrator 1 episode, 2011 |
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| Luis Torres De La Rosa | | 1 episode, 2011 |
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| Paul Walker | | 1 episode, 2011 |
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| Jody Whitworth | | 1 episode, 2011 |
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 | James Woods | - | Himself - Narrator 1 episode, 2011 |
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