Nick Pope
饰：Higher Exec. Officer, Ministry of Defense
Robert M. Wood
饰：Himself
汤姆·凯恩
Tom Kane
饰：Himself - Narrator
John Greenewald Jr.
饰：Priest
Charles I. Halt
饰：Himself - USAF Colonel
Richard F. Haines
饰：Himself - NARCAP
Terry Hansen
饰：Himself - Author
Christopher Montgomery
饰：Himself
Curtis Peebles
饰：Himself - Aerospace Historian
Rob Swiatek
饰：Himself - Fund for UFO Research
James Underdown
饰：Himself
Michael Schratt
饰：Himself - Military Aerospace Historian
Loren Coleman
饰：Himself - Author, `Mysterious America`
瑞奇·帕克
Ricky Pak
饰：Chi Pu Tei,unknown episodes,
Theophilus Jamal
饰：Military official,1 episode, 2005,
Flood Reed
饰：UFO Investigator Ted Phillips,1 episode, 2004,
David Blue
卡梅隆·齐德勒
Cameron Zeidler
Dave Stann
Georgiana Jianu
饰：Villager,1 episode, 2005,
Amy Procacci
Amy Procacci
本·格兰尼
Ben Graney
Burton Richardson
Burton Richardson
饰：Self - Narrator,6 episodes, 2004-2005,
William J. Birnes
William J. Birnes
饰：Self - Publisher, UFO Magazine,4 episodes, 2005-2006, / ...
Seth Shostak
饰：Self,3 episodes, 2005-2007, / ...
Jason Martell
饰：Self - Ufologist,1 episode, 2004,
Don Turner
Don Turner
小索尔·韦雷斯
Sal Velez Jr.
Joshua Wheeler
Betty Hill
Betty Hill
饰：Self - Abductee,1 episode, 2004,
Charles Beichman
饰：Self,1 episode, 2004,
George Noory
饰：Self,1 episode, 2005,
Blake Merriman
Blake Merriman
Michael Michalak
Swaylee Loughnane
Swaylee Loughnane
饰：Simon,1 episode, 2004,
Stephen Bassett
Stephen Bassett
饰：Self - Extraterrestrial Phenomena PAC,1 episode, 2004,
戴夫·吉斯特
Dave Gist
饰：Karyl Robin-Evans,1 episode, 2004,
Leslie Kean
饰：Self - Journalist,1 episode, 2004,
W.C. Levengood
饰：Self - Biophysicist,1 episode, 2004,
Chuck Missler
饰：Self - Author,1 episode, 2004,
Mark Rodeghier
饰：Self - Scientific Dir., Hynek Ctr. for UFO Studies,1 episode, 2004,
Robert Park
饰：Self - Univ. of Maryland,1 episode, 2004,
David E. Baisley
Guy Malone
饰：Self,1 episode, 2004,
Brenda Butler
饰：Self - Investigator,1 episode, 2004,
Robert Sheaffer
饰：Self - Author,1 episode, 2004,
Dan Means
Bryan Bukowski
小路易·奥利沃斯
Louie Olivos Jr.
Rhett Nadolny
Nancy Sharpe
饰：Reenactment,1 episode, 2004,
Al Chop
饰：Self - Air Force Spokesperson, 1951-53,1 episode, 2004,
Radha Alwa
Radha Alwa
诺曼·劳埃德
Norman Lloyd
饰：1 episode, 2005
Eric Meyers
Eric Meyers
饰：Self - Narrator,1 episode, 2005,
Jeff Wayne
饰：Self - Composer and Producer,1 episode, 2005,
Melina Paez
饰：1 episode, 2005
Matt Ukena
饰：Carlos Mendes's Photographer,1 episode, 2005,
James Penniston
饰：Self - Tech. Sergeant (Ret.),1 episode, 2005,
Marisol Giraud
饰：Villager,1 episode, 2005,
Bernard Lovell
饰：Self - Founder, Jodrell Bank Observatory,1 episode, 2005,
Georgina Bruni
饰：Self - Author, 'You Can't Tell the People',1 episode, 2005,
John F. Burroughs
饰：Self - USAF Airman (Ret.),1 episode, 2005,
Sarah J. Hale
饰：Re-Enactor,1 episode, 2005,
Rafael de la Rosa
Rafael de la Rosa
饰：Villager,1 episode, 2005,
A.J. Gevaerd
饰：Self - Interviewed,1 episode, 2005,
Phil De Carlo
Phil De Carlo
饰：Self - Listener of 1938 'War of the Worlds' Broadcast,1 episode, 2005,
Mike Laponis
饰：Self - Professor of Communications: University of La Verne,1 episode, 2005,
Larry Warren
饰：Self - Former Airman, Witness,1 episode, 2005,
George A. Slusser
饰：Self - Curator: The Eaton Collection, University of California Riverside,1 episode, 2005,
Bill Zuk
饰：Self - Author, 'Avrocar: Canada's Flying Saucer',1 episode, 2005,
马克·德克斯特
Mark Dexter
饰：Self - Narrator,1 episode, 2006,
Bruce Maccabee
Bruce Maccabee
饰：Self - optical physicist, U.S. Navy,1 episode, 2006,
Stan Bernard
Stan Bernard
饰：Self - Narrator,1 episode, 2006,
Stanton Friedman
饰：Self - Nuclear Physicist,5 episodes, 2004-2006, / ...
Richard Dolan
Richard Dolan
饰：Self - Author,3 episodes, 2004-2005, / ...
John F. Schuessler
John F. Schuessler
饰：Self - Int'l Director, Mutual UFO Network,2 episodes, 2004-2006, / ...
Kevin D. Randle
Kevin D. Randle
饰：Investigator,2 episodes, 2004, / ...
威尔·莱曼
Will Lyman
饰：Narrator,2 episodes, 2005-2006,
Avi K. Garg
饰：Tim Cullen,1 episode, 2005,
Brian Bogulski
Don Ecker
饰：Self,1 episode, 2005,
Jim Marrs
饰：Self - Author,1 episode, 2004,
Eric Lane
Kathy Marden
饰：Self - UFO Researcher,1 episode, 2004,
Derrel W. Sims
饰：Self - Hypnotherapist,1 episode, 2004,
托尼·杰
Tony Jay
饰：Self - Narrator,1 episode, 2004,
Linda Moulton Howe
Linda Moulton Howe
饰：Self - Cattle Mutilation Researcher,1 episode, 2004,
Ryan Izay
Ryan Izay
Jeff Doba
Jeff Doba
饰：Reenactment,1 episode, 2004,
Cameron Burton
饰：Reenactment,1 episode, 2004,
Carole Fontaine
饰：Self,1 episode, 2004,
Gerry Harris
饰：Self - Eyewitness,1 episode, 2004,
David L. Blue
饰：1 episode, 2004
Jerome Clark
饰：Editor,1 episode, 2004, / ...
Don Ledger
饰：Self - Researcher,1 episode, 2004,
Jon Justus
Joseph Phong Dao
Joseph Phong Dao
饰：Scientist,1 episode, 2004,
Dennis Dotson
Michelle Van Wagner
Michelle Van Wagner
饰：Reenactment,1 episode, 2004,
Justin Humphries
Karl Pflock
饰：Self - Author, 'Roswll: Inconvenient Facts',1 episode, 2004,
Christopher Slevin
Michael Swords
饰：Self - Western Michigan University,1 episode, 2004,
爱德华·赫曼
Edward Herrmann
饰：Narrator,1 episode, 2005,
迈克尔·普雷德
Michael Praed
饰：Self - Narrator,1 episode, 2005,
肯·克拉默
Ken Kramer
饰：Percival Lowell,1 episode, 2005,
凯文·J·安德森
Kevin J. Anderson
饰：Self,1 episode, 2005,
Roger Leir
饰：Self,1 episode, 2005,
Barry Miles
Barry Miles
饰：Self - Author, 'In the Sixties',1 episode, 2005,
Sergio Mojica
饰：1 episode, 2005
Greg Stebner
Greg Stebner
饰：Self - Narrator,1 episode, 2005,
Crystal Ferrando
饰：Villager,1 episode, 2005,
Frank Drake
饰：Self - President, SETI Institute,1 episode, 2005,
Simon P. Balm
饰：Self - Professor of Astronomy: Santa Monica College,1 episode, 2005,
Sam G. Preston
饰：Local Cowhand,1 episode, 2005,
Jerry Marble
Jerry Marble
饰：Radio Announcer,1 episode, 2005,
Alastair Trevill
Alastair Trevill
饰：Additional Voice,1 episode, 2005,
斯蒂文·格瑞尔
Steven M. Greer
饰：Self - Author, 'Disclosure',1 episode, 2006,
Patrick Uskert
Patrick Uskert
饰：Self - UFO Hunter,1 episode, 2006,
Bill Graves
Bill Graves
饰：Narrator,1 episode, 2006,
Norm Woodel
饰：Self - Narrator,1 episode, 2006,
William L. McDonald
饰：Self - UFO Researcher,1 episode, 2006,
Dennis Balthaser
饰：Self - UFO Researcher,1 episode, 2006,