Self (archive footage) (1 episode)
Judge Gerhard Gesell
Fred Girard (1 episode)
Jefferson Devereaux (1 episode)
Man with Balloon at Party
Dean Evans (35 episodes)
David L. 'Dave' Brady
Steve Gordon
Tom Bradfield
John Harman
Jeff Donley
Paul Martin
Mike Jackson
Chief Agent Dan Collins
Matthew Bostel
Captain Jeremy Bradford
Jim Warburton
Michael Brooks
Matt Claibourne
Joe Medford
Arthur Earthleigh
Nigel Armine
Bill Williams
Lawrence Hamilton
Professor Warren
Major Scott Landis
Roger Berton
Dr. Huntington Bailey
James Kincaid
Steve Mitchell
Charles Barclay
Craig Fleming
Mike Abbott
Tim Hanley
Prince Kurt von Rotenberg
Peter 'Pete' Van Allen
Kenneth Bixby
John Gamble
Stephen Forbes
Dan Hardesty
Capt. Stephen Dennett
Wild Bill Donovan
Tom Ransome
Clem Spender
Buck Cantrell (edited from 'Jezebel')
Dr. Frederick Steele
Cass Harrington
Himself (uncredited)
Richard 'Dick' Orr
Denny Jordan
Jared Whitney (archive footage)
Buck Cantrell
Jared Whitney
Lt. Commander Dan Matthews
Bill Austin
Paul Cameron
Steve Russett
Fred Gilbert
James 'Jim' Baker
Johnny Jones
Matt Logan
Alan Tanner
Emory Muir
Bob McNear
Bill Bradford
Curt Devlin
Mack Hale
Terry Parker
Colin Trent
Jack Townsend
McAllister
William H. Reynolds
Douglas Beall
Lt. Jim Stevens
Jim Thorne
Courtland Trenholm
Bob Chandler
Neil Davis
Pat Denning
Dr. Karl Bernhard
Dr. Tony Travers
Geoffrey Gault
Jim Gilson
Peter Acton
Police Inspector Patten
Julian Tierney
Adult Roelf Pool
Alan Scott
Donald Swift
Capt. Ronald Keane
Les Haines
James Brent
Inspector Turner
Worker (uncredited)