Star Trek (1966–1969)
7.8/10
2,068
20 user 4 critic

The Enemy Within 

A transporter malfunction splits Captain Kirk into two halves: one meek and indecisive, the other violent and ill tempered. The remaining crew members stranded on the planet cannot be beamed up to the ship until a problem is fixed.

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Cast

Episode complete credited cast:
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Ed Madden ...
Fisher (as Edward Madden)
Garland Thompson ...
Wilson
Jim Goodwin ...
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Storyline

While beaming back aboard the Enterprise, a transporter malfunction results in two vastly different Captain Kirks being beamed aboard. His personality has in effect been split into two. One Captain Kirk is weak and indecisive, fearful of making any kind of decision; the other is a mean-spirited and violent man who likes to swill brandy and force himself on female crew members. Meanwhile, as Scotty struggles to repair the transporter, the landing party is stuck on the planet below with temperatures falling rapidly. Written by garykmcd

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TV-PG | See all certifications »
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Release Date:

6 October 1966 (USA)  »

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4:3
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Did You Know?

Trivia

A reaction close-up shot of Spock on the bridge is recycled from Star Trek: The Naked Time (1966). The same shot was used again in Star Trek: The City on the Edge of Forever (1967). See more »

Goofs

Evil Kirk's phaser changes between cuts in the shoot-out in Engineering. See more »

Quotes

Scott: Uh, it might profit ya to let Dr. McCoy give ya the once-over.
Captain James T. Kirk: All right, engineer, I'll have my engines looked to.
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Connections

Referenced in NCIS: New Orleans: You'll Do (2015) See more »

Soundtracks

Theme From Star Trek
(uncredited)
Written by Alexander Courage
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User Reviews

 
Clearly a stumble for the series
5 December 2006 | by (Bradenton, Florida) – See all my reviews

Of the early episodes, this is one that was poorer than average. This isn't to say that it was bad (I'd consider it about the quality of CHARLIE X), but it definitely was sub-par. Why? Well, it was the first episode where William Shatner was allowed to chew the scenes--with over-acting galore! Shatner plays dual roles--an evil id-like Captain and a wussy and indecisive Captain. It turns out that the real captain had himself divided into the two halves and the problem was to first identify that there were two Kirks (people just thought the real one had gone nuts) and then figure out how to re-integrate them. All the meanwhile, a crew is stuck on an icy and craptastic planet awaiting transportation back to the ship (note--they must have forgotten that they had the Galileo shuttle craft). A watchable but not especially memorable episode that features overacting--and then some.


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