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"The Lights of Zetar" was the 73rd episode of Star Trek: The Original Series, the 18th episode of the show's third and final season, first aired on 31 January 1969. The episode was written by Jeremy Tarcher and Shari Lewis, directed by Herb Kenwith and novelized in Star Trek 6 by James Blish.



Episode characters

Clifford Brent[1]Christine ChapelPavel ChekovBill HadleyJames T. KirkJohn KyleRoger LemliLeonard McCoyMira RomaineMontgomery ScottSpockHikaru SuluNyota UhuraZetariansUSS Enterprise computer

Novelization characters

Pavel ChekovJames T. KirkJohn KyleLeonard McCoyMira RomaineMontgomery ScottSpockHikaru SuluNyota UhuraZetarians
Referenced only
Christine Chapel

Starships and vehicles

USS Enterprise (Constitution-class heavy cruiser)


Memory Alpha
Referenced only
Mars (Martian Colony 3, Sol system) • Zetar II

Races and cultures


Technology and weapons


Materials and substances


States and organizations


Ranks and titles

captaincommandercommanding officercommunications officerFederation Starfleet ranksFederation Starfleet ranks (2260s)first officerlieutenant commanderofficerscientistscience officer

Other references

anatomyarmbootclothingFederation membersfingerfive-year missiongovernmenthumanoidlanguagelifeformlogicmattermemorynation-stateorbitpantsquadrantraces and culturesrankspacestarstardateStarfleet uniformStarfleet uniform (2260s)technologytitletunicuniformuniverseweapon


Related media


Video releases


Episode images

Adaptation images


published order
Previous episode:
The Mark of Gideon
TOS episode produced Next episode:
The Cloud Minders
Previous episode:
That Which Survives
TOS episode aired Next episode:
Requiem for Methuselah
Previous story:
The Savage Curtain
Star Trek 6
Next story:
The Apple
chronological order
Previous Adventure:
The Mark of Gideon
Pocket Next Adventure:
The Cloud Minders
Previous Adventure:
DTI: Forgotten History
Chapter 3, Section 1
Voyages of the
USS Enterprise (NCC-1701)
(2264 to 2270)
Next Adventure:
The Cloud Minders

External links

  1. This character was not named in the episode but the same actor, wearing an officer's Starfleet uniform, was addressed as Brent in TOS episode: "The Naked Time". The same actor also played the character of Vinci.