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
Did You Know?
First broadcast episode of Star Trek
(1966): The Original Series to feature the D7 Klingon battle cruisers. Although the episode Star Trek: Elaan of Troyius
(1968) was produced 3 months before this episode, and technically the first to feature the D7s, this episode was aired on TV first, since NBC changed the airing order for all the episodes. For the Remastered series in 2006, digital shots of the D7s were inserted into scenes in the episode Star Trek: Errand of Mercy
(1967), which now officially makes that episode to be the first to have the D7s. 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
(1966). However, the cloaking technology in Star Trek: The Enterprise Incident
(1968) is new because it is improved. The Enterprise was still able to track a Romulan ship, though not accurately, in "Balance of Terror" and cannot detect them at all with this improved version. See more
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.
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.
I did give a ...