Eddie Albert

as Adm. Wiley Sloan

2 episodes

John Carradine

as Ronald Bentley

2 episodes

Alex Cord

as Dr. Sam Marlowe

2 episodes

Robert Forster

as Comdr. Jeff Selkirk

2 episodes

Frank Gorshin

as Dan Wesker

2 episodes

Mark Harmon

as Peter Cabot

2 episodes

Christopher Lee

as John McKenzie

2 episodes

Tom Dunstan

as Agra Worker

2 episodes

Bruce Heighley

as Technician

2 episodes

Robert Paul Jordan

as (voice)

2 episodes

John Berwick

as Crewman

2 episodes

Laurence Haddon

as Cpt. Volero (uncredited)

2 episodes

Julie Bennett

as Sylvia King

2 episodes

Michael White

as PC18 Officer

2 episodes

Sandy Simpson

as Moore

2 episodes

John Brandon

as Chief Engineer (uncredited)

2 episodes

Clete Roberts

as Newscaster (uncredited)

2 episodes

Kirk Cameron

as Liam

2 episodes

Hedley Mattingly

as Bailey

2 episodes

Peter Stader

as Ed Linder (uncredited)

2 episodes

Lawrence Levine

as (uncredited)

2 episodes

Michael Evans

as Eric Whittaker

2 episodes

Alan Fudge

as Lew Bascomb

2 episodes

Warwick Sims

as Luke Crane

2 episodes

Lori Lethin

as Maria (uncredited)

2 episodes

Laird Stuart

as Paul (uncredited)

2 episodes

Peter von Zerneck

as Hoffman

2 episodes

Kip Niven

as Gantman (uncredited)

2 episodes

George Innes

as Dave Winter

2 episodes

Belinda Mayne

as Sally Crane

2 episodes

Duncan Regehr

as Paul Ryker

2 episodes

Colin Drake

as Old Man

2 episodes

Jean Marsh

as Dr. Goldman

2 episodes

John McIntire

as Sen. Oliver Bartholomew

2 episodes

Emma Samms

as Lea McKenzie

2 episodes

Christina Nigra

as Beth

2 episodes

Irene Hervey

as Carrie (uncredited)

2 episodes

John Ratzenberger

as Bill Sweeney

2 episodes

Lawrence Benedict

as Young Bailey (uncredited)

2 episodes

Michael M. Vendrell

as Robbie Cole (uncredited)

2 episodes

Tom Willett

as Lambeth Walk Dancer (uncredited)

2 episodes

Jeanette Nolan

as Sarah Bartholomew

2 episodes

Alan Caillou

as Goliath Captain (uncredited)

2 episodes

Michael Jeffers

as Community Member

2 episodes

Arthur Tovey

as Community Member

2 episodes

Robert Cole

as Community Member

2 episodes

Lars Hensen

as Community Member

2 episodes

Arnold Roberts

as Community Member

2 episodes

Sam L. Nickens

as Community Member

2 episodes

Nick Borgani

as Community Member

2 episodes

Shirley Anthony

as Reporter

2 episodes

Bernard Sell

as Community Member

2 episodes

Robert Strong

as Community Member

2 episodes

Rorion Gracie

as Reporter

2 episodes

Nico Stevens

as Reporter

2 episodes