Star Trek (1966–1969)
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The Enterprise Incident 

An apparently insane Capt. Kirk has the Enterprise deliberately enter the Romulan Neutral Zone where the ship is immediately captured by the enemy.


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Episode complete credited cast:
Richard Compton ...
Technical Officer
Robert Gentile ...
Mike Howden ...
Romulan Guard
Gordon Coffey ...


The Enterprise deliberately crosses the Neutral Zone, on Kirk's orders, into Romulan space and is promptly surrounded by Romulan warships, each equipped with a "cloaking device" that renders it undetectable. Spock betrays the apparently irrational and paranoid Kirk to the Romulan commander, a woman who is obviously attracted to Spock. A deadly game between Kirk, Spock and the Romulans risks not only the Enterprise but the tenuous cease-fire between the Romulans and the Federation. Written by Tom D.

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Release Date:

27 September 1968 (USA)  »

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Technical Specs


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Aspect Ratio:

1.33 : 1
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Did You Know?


In this episode Spock scans space out to one-half parsec and says that there are no ships present. As the Enterprise enters the Neutral Zone Romulan ships appear from nowhere. Later Spock says that the Romulans must have invented a cloaking device but they already knew the Romulans had one as they witnessed it in use in Star Trek: Balance of Terror (1966). See more »


The Enterprise crew are shocked to learn that their surprise capture may be due to a new cloaking technology possessed by the Romulans. Kirk and crew already encountered cloaked Romulans two years earlier in Star Trek: Balance of Terror. However, the cloaking technology in Star Trek: The Enterprise Incident is new because it is improved. The Enterprise was still able to track a Romulan ship, though not accurately, in Star Trek: Balance of Terror and cannot detect them at all with this improved version. See more »


[first lines]
Dr. McCoy: [voice-over] Enterprise Medical Log, stardate 5027.3, Dr. Leonard McCoy recording. I'm concerned about Captain Kirk. He shows indications of increasing tension and emotional stress.
Chekov: I have completed the assignment, Captain: a theoretical incursion...
Captain James T. Kirk: Yes, Mr. Chekov, I can read, and as usual, your theoretical evaluations do not tally with mine. Return to your duty, and I'll let you know when your work is satisfactory. Mr. Spock, full sensor scan on the region, please.
Spock: I did give a ...
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Featured in William Shatner's Star Trek Memories (1995) See more »

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User Reviews

Kirk's Insanity Into The Romulan Territory
12 January 2017 | by (United States) – See all my reviews

Season 3, episode 2. Kirk being extremely stressed out without relief has fallen into a state of temporary insanity. Kirk is very snappy at all crew members and has given orders to cross into the Neutral Zone - Romulan territory. They are met with a Klingon ship approaching them and others surrounding them. The Romulans have acquired Klingon technology. Kirk has violated a major space treaty. The Romulans made a deal 2 crew members as prisoners in exchange for 2 crew members as prisoners. Kirk agrees and the Romulans made good on the exchange. The Romulan Commander is interested in Spock since he is a Vulcan. Spock cannot lie being a Vulcan and tells the truth to the Commander, while an insane Kirk listens. Romulan Commander charges the Enterprise's Kirk with espionage but will not hold the Enterprise's crew responsible. Mr. Scott is left in charge of the Enterprise and will not follow the Romulan Commander's requests - only those of Kirk. Kirk is still mad, Spock is being wooed by the female Romulan Commander and Scotty refuses to budge. Kirk requires McCoy's medical help and the Romulan's allow McCoy to board the ship and attend to Kirk. The tension builds as the conclusion draws near.

It is one of the best Star Trek episodes of all 3 seasons. Some believe that season 3 is by far the worst season but this episode proves differently.


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