Star Trek: Season 1, Episode 25

The Devil in the Dark (9 Mar. 1967)

TV Episode  -   -  Action | Adventure | Sci-Fi
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Ratings: 8.4/10 from 1,021 users  
Reviews: 17 user | 8 critic

The Enterprise is sent to a mining colony that is being terrorized by a mysterious monster.



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Title: The Devil in the Dark (09 Mar 1967)

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Episode complete credited cast:
Brad Weston ...
George Allen ...
Engineer #1 (as George E. Allen)
Jon Cavett ...
Barry Russo ...
Lt. Cmdr. Giotto


The Enterprise travels to the planet Janus 6 to assist the mining colony there. Kirk, Spock and McCoy beam down to the planet where Chief Engineer Vanderberg tells of a creature loose in the mine tunnels killing some of his men. The monster seems to appear out nowhere then disappears just as quickly. Finding that the creature, known as a Horta, lives in a newly opened part of the underground mining complex, Spock uses the Vulcan mind meld to determine why it is killing the miners. Written by garykmcd

Plot Summary | Plot Synopsis

Plot Keywords:

creature | colony | planet | vulcan | miner | See more »


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Release Date:

9 March 1967 (USA)  »

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Technical Specs


Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


This episode includes only one actress, who appears for a few seconds and has no lines. See more »


When Kirk and the Horta have squared off against each other, and Spock enters, there's a two-angle back-and-forth. When the camera is directly at Kirk, he is kneeling with a phaser in his right hand. When the angle switches to Kirk at left, Spock far center, Kirk is kneeling but with a communicator in his left hand. The change goes back and forth a couple of times. See more »


Captain James T. Kirk: Mr. Spock, we seem to have been given a choice: death by asphyxiation or death by radiation poisoning.
See more »


Referenced in Mind Meld: Secrets Behind the Voyage of a Lifetime (2001) See more »

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User Reviews

The Horta, not life as we know it
1 September 2013 | by (Buffalo, New York) – See all my reviews

Leonard Nimoy's Vulcan mind meld proves of invaluable assistance in this Star Trek episode. Life may not look anything like it does on earth and it may not even function bodily as we do on earth. But life can be found in the strangest of places.

Consider this planet which looks to be made of solid rock, yet something is killing off the miners in Ken Lynch's crew. Which is why he sent a distress call and the Enterprise responds.

Lynch's men are not being killed, in fact they're being burned to a crisp. It's being done by a creature we learn calls itself a Horta and to our eyes it's not aesthetically pleasing.

This Star Trek story reduces life to a problem of communication. The Horta has a very good reason for doing what it does.

It's a good moral this story has, all we need in the Universe is better communication.

1 of 1 people found this review helpful.  Was this review helpful to you?

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