• Starring: Scott Thomas (Professor Paul Jordan), Susan Howard (Eve Costigan), Jared Martin (Varian), Carl Franklin (Dr. Fred Walters), Karen Somerville (Jill Sands), Ike Eisenmann (Scott Jordan)
• Guest Starring: Leif Erickson (Captain Ben Wallace), Scott Brady (Carl Johanson)
• And: Don Knight (Paget)
• Special Guest Stars: Ian McShane (Sir James Camden), Gary Collins (Dar-L), Mary Ann Mobley (Rhea), Jason Evers (Atar)
• Guest Starring: Lynn Borden (Enid Jordan)
• Co-Starring: Jack Stauffer (Andy), Byron Chung (George), Tom McCorry (Scar)
• And: Mike Road (The Voice of the Source)
• Teleplay By: Michael Michaelian & Katharyn Michaelian Powers & Merwin Gerard
• Story By: Merwin Gerard
• Directed By: Andrew V. McLaglen

• Starring: Jared Martin (Varian), Carl Franklin (Dr. Fred Walters), Ike Eisenmann (Scott Jordan), Katie Saylor (Liana)
• Guest Starring: Gary Collins (Dar-L), Albert Stratton (Itar)
• And: Jason Evers (Atar)
• Special Guest Star: Mary Ann Mobley (Rhea)
• Co-Starring: Ian Jon Tanza (Under), Lawrence Bame (Maron)
• And: Mike Road (The Voice of the Source)
• Teleplay By: Katharyn Michaelian Powers
• Story By: Michael Michaelian & Katharyn Michaelian Powers
• Directed By: Barry Crane

• Starring: Jared Martin (Varian), Carl Franklin (Dr. Fred Walters), Ike Eisenmann (Scott Jordan), Katie Saylor (Liana)
• And: Roddy McDowall (Dr. Jonathan Willaway)
• Guest Starring: John David Carson (Cyrus)
• Special Guest Star: Marj Dusay (Rachel)
• Co-Starring: Lester Fletcher (Chef), Frank Corsentino (Toren), Joseph Della Sorte (Aren), Ron Burke (Robert), Brian Patrick Clarke (Daniel), Bud Kenneally (Veteran), Crofton Hardester (Michael)
• Written By: Harold Livingston
• Directed By: Irving J. Moore

• Starring: Jared Martin (Varian), Carl Franklin (Dr. Fred Walters), Ike Eisenmann (Scott Jordan), Katie Saylor (Liana)
• And: Roddy McDowall (Dr. Jonathan Willaway)
• Guest Starring: Mark Lambert (Alpha), Bobby Eilbacher (Sigma), Cosie Costa (Delta), Stanley Clay (Beta)
• Co-Starring: Richard Natoli (Gamma), Al A. Eisenmann (Omega), Michael Baldwin (Rho)
• Written By: Leonard Katzman
• Directed By: Alf Kjellin

• Starring: Jared Martin (Varian), Carl Franklin (Dr. Fred Walters), Ike Eisenmann (Scott Jordan), Katie Saylor (Liana)
• And: Roddy McDowall (Dr. Jonathan Willaway)
• Guest Starring: John Saxon (Consul Tarant), Morgan Paull (Argon), Lenore Stevens (Lara), Robert Patten (Luther)
• Special Guest Star: Johnny Doran (Nikki)
• Co-Starring: Bobby Porter (The Neffring)
• Main Title Narrator: Mike Road
• Teleplay By: Michael Michaelian
• Story By: Bruce Lansbury
• Directed By: Vincent McEveety

• Starring: Jared Martin (Varian), Carl Franklin (Dr. Fred Walters), Ike Eisenmann (Scott Jordan), Katie Saylor (Liana)
• And: Roddy McDowall (Dr. Jonathan Willaway)
• Guest Starring: Ellen Weston (Maera), Christina Hart (Gwenith), Jonathan Goldsmith (Zaros), Vic Mohica (Baras)
• Co-Starring: Belinda Balaski (Arla), Jeffrey Byron (Heras), Jerry Daniels (The Guard)
• Main Title Narrator: Mike Road
• Written By: Richard Fielder
• Directed By: Virgil W. Vogel

• Starring: Jared Martin (Varian), Carl Franklin (Dr. Fred Walters), Ike Eisenmann (Scott Jordan), Katie Saylor (Liana)
• And: Roddy McDowall (Dr. Jonathan Willaway)
• Guest Starring: Mel Ferrer (Appolonius), Mary Frann (Roxanne), Richard Lawson (Barker), Christina Hart (Gwenith)
• Main Title Narrator: Mike Road
• Written By: Michael Michaelian
• Directed By: Art Fisher

• Starring: Jared Martin (Varian), Carl Franklin (Dr. Fred Walters), Ike Eisenmann (Scott Jordan), Katie Saylor (Liana)
• And: Roddy McDowall (Dr. Jonathan Willaway)
• Guest Starring: Joan Collins (Queen Halyana), Paul Mantee (Morgan), Julie Cobb (Adrea), Beverly Todd (Connell)
• Co-Starring: Charles Walker II (Obril), Amy Joyce (Masel)
• Main Title Narrator: Mike Road
• Written By: D.C. Fontana & Ken Kolb
• Directed By: Victor French

• Starring: Jared Martin (Varian), Carl Franklin (Dr. Fred Walters), Ike Eisenmann (Scott Jordan), Katie Saylor (Liana)
• And: Roddy McDowall (Dr. Jonathan Willaway)
• Guest Starring: Dale Robinette (Kedryn), Carole Demas (Krysta)
• Co-Starring: William O'Connell (Simkin), Dax Xanos (The Rider), Lynn Borden (Enid)
• Main Title Narrator: Mike Road
• Written By: Katharyn Michaelian Powers
• Directed By: David Moessinger

• Starring: Jared Martin (Varian), Carl Franklin (Dr. Fred Walters), Ike Eisenmann (Scott Jordan), Katie Saylor (Liana)
• And: Roddy McDowall (Dr. Jonathan Willaway)
• Guest Starring: Richard Jaeckel (York), Nicholas Hammond (Tye)
• And: Cheryl Ladd (Natica)
• Special Guest Star: Lew Ayres (Rayat)
• Co-Starring: Gerald McRaney (The Co-Pilot), Burt Douglas (The Pilot), Jim Poyner (Roland)
• Main Title Narrator: Mike Road
• Written By: Robert Hamilton
• Directed By: Vincent McEveety

• Written By: Calvin Clements, Jr.
• Note: Script dated Mar 01/77 but never produced