• 

  Bob Bates

  饰：Himself - Artist & Teacher

• 

  Francine Blake

  饰：Herself - Circle Researcher

• 

  Polly Carson

  饰：Herself - Farmer

• 

  Simon Peter Fuller

  饰：Himself - Historian

• 

  Robin Heath

  饰：Himself - Author

• 

  Palden Jenkins

  饰：Himself - Philosopher

• 

  Isabelle Kingston

  饰：Herself - Historian

• 

  Nick Kollerstrom

  饰：Himself - Educator

• 

  W.C. Levengood

  饰：Himself - Biophysicist

• 

  Steve Alexander

  饰：自己

• 

  Janet Ossebaard

  饰：Self - Author & Researcher

• 

  Paul Vigay

  饰：Self - Circle Researcher

• 

  Lucy Pringle

  饰：Self - Author & Photographer

• 

  Nancy Talbott

  饰：Self - BLT Research Team, Inc.