Star Trek: Season 1, Episode 29

Operation -- Annihilate! (13 Apr. 1967)

TV Episode  -   -  Action | Adventure | Sci-Fi
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Ratings: 7.6/10 from 875 users  
Reviews: 12 user | 9 critic

The Enterprise crew attempts to stop a plague of amoeba-like creatures from possessing human hosts and spreading throughout the galaxy.



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Title: Operation -- Annihilate! (13 Apr 1967)

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Episode complete credited cast:
Joan Swift ...
Maurishka ...
Peter Kirk (as Craig Hundley)
Fred Carson ...
First Denevan
Jerry Catron ...
Second Denevan


The Enterprise traces a virus-like outbreak that seems to be traveling in a direct line across a planetary system. The next planet is home to Kirk's brother Sam, his sister-in-law and their young son. The Enterprise arrives too late however for Sam. They find flying jellyfish-like creatures that attach themselves to humans. They take over the victims nervous system forcing them to bend to their will. Spock finds a weapon to use against the creatures but it leaves him hopelessly blind. Written by garykmcd

Plot Summary | Plot Synopsis


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Official Sites:



Release Date:

13 April 1967 (USA)  »

Company Credits

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Technical Specs


Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


This takes place in 2267. See more »


In the beginning scenes on the bridge after Uhura raises Kirk's sister-in-law, Uhura is not sitting at the communications station which places Spock's science station to her left; Spock's station can be seen in the background to her right which would place her at the navigation sub-station which is to the left of the science station. When she loses Aurelen's signal and Kirk walks away, she is now sitting at her correct station to the right of the science station. See more »


[the landing party shoots down one of the alien life forms]
Spock: Incredible. Not only should it have been destroyed by our phasers, it does not even register on my tricorder.
Yeoman Zahra: Captain, it doesn't even look real.
Spock: It is not life as we know or understand it, yet it is obviously alive. It exists.
Capt. Kirk: And it can bear up under full phaser power.
See more »


References The Brain Eaters (1958) See more »

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User Reviews

Set location: TRW in Redondo Beach,CA
24 June 2006 | by (United States) – See all my reviews

User commentator a_l_i_e_n from Canada does great job of summarizing plot of this episode.

Of interest to me is his comment "The futuristic architecture of the Denovan capital for example is a fine example of the show's use of outdoor locations. The art direction here is vivid, well constructed and definitely a cut above the usually unconvincing indoor sets they so often had to make due with."

In fact the location of this episode's set was the old TRW Defense and Space Systems Group campus in Redondo Beach, CA at Avaiation Blvd and Marine Ave (also adjacent, and just N. of old Redondo HS campus) where I used to work in the late 70s. It was called Space Park or Research Park (address was 1 Space Park, RB, CA) back then. The flight of concrete stairs they come down at beginning of episode was the path to the cafeteria/lecture presentation area. Rest of set (where creatures were stuck to walls and ceiling) was in a typical indoor waiting area in most any of the many architecturally stylish buildings on that campus.

14 of 16 people found this review helpful.  Was this review helpful to you?

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