Star Trek (1966–1969)
16 user 5 critic

The Lights of Zetar 

A mysterious, twinkling mass of sapient energy ravages an important archive and Scotty's new girlfriend may be linked to it.


(as Herb Kenwith)


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Episode complete credited cast:
Jan Shutan ...
Nurse Christine Chapel / Computer Voice
John Winston ...
Lt. Kyle
Libby Erwin ...
Rest of cast listed alphabetically:
Zetar (voice)


The Enterprise is on course to install new equipment on Memory Alpha, the central library storage facility for the Federation. Chief Engineer Scott has been working closely on the project with Lieutenant Mira Romaine with whom he has been forming a romantic attachment. The Enterprise encounters a space storm that kills the staff at Memory Alpha and possesses Lieutenant Mira Romaine. Written by laird-3

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TV-PG | See all certifications »


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Release Date:

31 January 1969 (USA)  »

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Technical Specs


Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


"Star Trek: The Original Series" is known as a great science fiction series but many of its stories contain archetypes of horror. This is the seventh of eight stories that contain a "ghost," what author Stephen King calls an embodiment of the past imposing its will upon the present. Other ghosts (whether supernatural or metaphorical) in the series can be found in Star Trek: What Are Little Girls Made Of? (1966), Star Trek: Space Seed (1967), Star Trek: Who Mourns for Adonais? (1967), Star Trek: The Doomsday Machine (1967), Star Trek: Return to Tomorrow (1968), Star Trek: And the Children Shall Lead (1968), and Star Trek: The Savage Curtain (1969). See more »


When Spock is monitoring and increasing pressure in the pressure chamber, at one point the level is shown as "20 atmospheres." The next view of the gauge shows 30 A's, but the shot after that is back to 25 A's when it is supposed to be a constant increase. See more »


Capt. Kirk: [Captain's log] When a man of Scotty's years falls in love, the loneliness of his life is suddenly revealed to him. His whole heart once throbbed only to the ship's engines.
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Referenced in Star Trek: Starship Creator (1998) See more »

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User Reviews

Disco lights in space
2 August 2014 | by See all my reviews

This Star Trek episode involves a life form or as Mr. Spock says 10 different light forms who light up outer space like a disco ball. Although all the crew members are affected in some way, the one who is totally affected is Jan Shutan who completely collapses after these aliens have briefly invaded the Enterprise.

Shutan is James Doohan's latest girlfriend and I have to say his conduct was most unprofessional as he leaves his post in engineering as his concern for Shutan is so unlike Scotty for whom the Enterprise engines are his first love.

These lights devastate a planet called Alpha Memory which is a giant computer complex for Star Fleet. But DeForest Kelley does come up with a solution that saves Shutan and kills the aliens.

Did you doubt that someone on the Enterprise would?

A subpar episode for Star Trek.

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