• Guest Stars: Barbara Luna (Koori), Lance Le Gault (Flagg), David Opatoshu (Llamajuna), Sid Haig (Pratt), Kenneth O'Brien (Captain)
• Co-Starring: Dennis Haysbert (Communication-Probe Officer), Lavelle Roby (Thromis), Michael Fox (High Judge), Andre Harvey (Thordis)
• With: J. Christopher O'Connor (Young Lieutenant), Tim O'Keefe (Bailiff), Ken Chandler (Court Clerk), Susan McIver (Simmons)
• Written By: Norman Hudis
• Directed By: Vincent McEveety

• Guest Stars: Mark Lenard (Ambassador Duvoe), Len Birman (Admiral Zite), Paul Carr (Lieutenant Devlin)
• Co-Starring: Donn Whyte (Zykarian, Jr.), Felix Silla (Odee-x), Michael Stroka (Rolla), Alex Hyde-White (Technician)
• Written By: Robert and Esther Mitchell
• Directed By: Daniel Haller

• Guest Stars: Harry Townes (The Guardian), Rosemary De Camp (Buck's Mother), Paul Carr (Lieutenant Devlin), Barbara Luna (Koori)
• Co-Starring: Shawn Stevens (Boy), Dennis Haysbert (Helmsman)
• Featuring: Vic Perrin (1st Guardian), Howard Culver (Mailman)
• Written By: Paul Schneider & Margaret Schneider
• Directed By: Jack Arnold

• Guest Stars: Linden Chiles (Ambassador Cabot), Vernon Weddle (Dr. Moray), Kim Hamilton (Nurse Paulton), Paul Carr (Lieutenant Devlin)
• Co-Starring: Stacy Keach, Sr. (Senior Officer), Barry Cahill (Major Elif), Alex Hyde-White (Technician), Allan Hunt (Wing Man), Frank Parker (Captain)
• With: Andrea Pike (Crew Member)
• Written By: Francis Moss
• Directed By: Barry Crane

• Guest Stars: David Hollander (Velis), Anthony James (Prison Colony Leader), Bruce M. Fischer (Loran), Russell Wiggins (Relcos), Paul Carr (Lieutenant Devlin)
• Co-Starring: Diana Chesney (Hag), Richard Wright (Onlooker #1)
• With: Arthur Eisner (Onlooker #2), Roger Rose (Marcos), Michael Masters (Jailer), Bob Elyea (Alphie)
• Written By: Calvin Clements & Stephen McPherson
• Directed By: Vincent McEveety

• Guest Star: Amanda Wyss (Laura)
• Co-Starring: Sandy-Alexander Champion (Chief Petty Officer Hall), Alex Hyde-White (Lieutenant Martin), James Parkes (Kovick)
• With: Gary Bolen (Johnson), Leigh C. Kim (Petrie), Hubie Kerns, Jr. (Mummy Monster)
• Written By: Robert and Esther Mitchell
• Directed By: John Patterson

• Guest Stars: Anne E. Curry (Cyra Samos), Dave Cass (Major Jason Samos)
• Co-Starring: Bobby P. Lane (Delph)
• With: Dennis Freeman (Midshipman)
• Written By: Paul Schneider & Margaret Schneider
• Directed By: Victor French

• Guest Star: Tommy Madden (General Xenos)
• Co-Starring: Alex Hyde-White (Ensign Moore), John Edward Allen (General Zoman), Tony Cox (Private Zedht), Billy Curtis (General Yoomak), Harry Monty (General Sothoz), Spencer Russell (General Towtuk), Charles Secor (General Kuzan)
• Written By: William Keys
• Directed By: Vincent McEveety

• Guest Stars: John Fujioka (Hand of Goral), William Bryant (Chief Petty Officer Cowan), Peter Kastner (Reardon)
• Co-Starring: Dennis Haysbert (Lieutenant Parsons)
• With: Michael Horsley (Yeoman James)
• Written By: Francis Moss
• Directed By: David G. Phinney

• Guest Stars: Ramon Bieri (Commissioner Bergstrom), William Sylvester (Lieutenant General Preston C. Myers), David Hooks (General Arnheim), Walter Brooke (U.S. President), John Milford (AF General)
• Co-Starring: John O'Connell (Major Jim Peterson), Thomas Bellin (Crawford), Buck Young (Brigadier General Biles)
• With: Carl Reindel (Air Force Sergeant), Eric Lawrence (Young Marine), Jim Emery (Marine Pilot), Dean Brooks (Marine Sergeant)
• Written By: Stephen McPherson
• Directed By: Bernard McEveety

• Guest Stars: Devon Ericson (Asteria Eleefa), Denny Miller (Saurus), William Kirby Cullen (Demeter)
• Co-Starring: Walker Edmiston (Koldar), Michele Marsh (Cleis), Dennis Haysbert (Ensign), Stuart Nisbet (Rand), Eldon Quick (Chronos)
• With: Brady Rubin (Syla), Jackie Russell (Kally), Lachelle Chamberlain (Darel), Keith Atkinson (Joham)
• Written By: Stephen McPherson
• Directed By: Jack Arnold