Star Trek (1966–1969)
23 user 6 critic

This Side of Paradise 

The Enterprise investigates a planet whose colonists should be dead, but are not.


Ralph Senensky


D.C. Fontana (teleplay by), Jerry Sohl (story by) (as Nathan Butler) | 2 more credits »

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Episode complete credited cast:
William Shatner ... Capt. Kirk
Leonard Nimoy ... Mr. Spock
Jill Ireland ... Leila Kalomi
Frank Overton ... Elias Sandoval
DeForest Kelley ... Dr. McCoy
Grant Woods ... Kelowitz
George Takei ... Sulu
Nichelle Nichols ... Uhura
Michael Barrier Michael Barrier ... DeSalle
Dick Scotter Dick Scotter ... Painter
Eddie Paskey ... Crewman


The Enterprise is ordered to clean up the aftermath of a doomed colony on Omicron Ceti III, a planet under constant irradiation from deadly Berthold Rays. Upon arrival, however, the colonists aren't only alive but in perfect health, with no desire to leave their new world. They are in fact under the influence of plant spores which not only keep them in good and improved health but simultaneously keep them in a placid state of happiness and contentment. Mr Spock reacquaints with Leila Kalomi, an old friend who had been (and still is) in love with him. She leads Spock into being affected by the spores, and he is thereafter, for the first time, able to express love for her in return. Eventually the entire ship's crew is affected, leaving Kirk alone to wonder how he can possibly rescue them from perpetual bliss. Written by Clive Wilson

Plot Summary | Plot Synopsis


TV-PG | See all certifications »


Official Sites:

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Release Date:

2 March 1967 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:




Aspect Ratio:

1.33 : 1
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Did You Know?


Stuntman Bobby Bass, whose character tried to break up the fight between the two officers, had his only lines of dialogue in the series here. See more »


Leila brings Spock, wearing his Starfleet uniform to a place in the open countryside where the spore-generating plants are growing. Moments later, Kirk calls Spock on his communicator; Spock answers while lying in the field with Leila, wearing a green jumpsuit typically worn by all the colonists. Apparently Spock found a jumpsuit lying in the fields and quickly changed clothes before Kirk called. See more »


Sulu: When it comes to farms, I wouldn't know what looked right or wrong if it were two feet from me.
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Referenced in Star Trek New Voyages: Phase II: Mind-Sifter (2014) See more »


Star Trek Theme
Written by Alexander Courage
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User Reviews

Personal Impact
11 February 2007 | by Larry WardSee all my reviews

This episode validated Spock's "half-human" emotional nature. As a teen, my nickname was "Spock". As a fan, I organized a write-in campaign to prevent the original cancellation of Star Trek (unsuccesful). So, when I tell you that Spock kissing the delicately beautiful Jill Irelend caused me no small discomfort in high school, believe it! The effect of the spores could only be overcome by adrenaline (epinephrine). My favorite lines from the show? When questioned as to whether he really is a doctor, McCoy replies: " Do you want to see how fast I can put you in the hospital?" My current occupation is- yes- physician!

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