When the Enterprise puts in to space dock for an energy sweep of the ship which is lethal to humans, Picard gets trapped on board with technicians who are not what they appear to be.



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Episode cast overview, first billed only:
Tom Nibley ...
Satler (as Tim deZarn)
Arlee Reed ...


The Enterprise is docked at a station where it is to undergo a routine procedure to remove accumulated baryon particles. The ship must be evacuated while undergoing the procedure but Picard realizes there are people on board that should not be there. When the power is shut down, he finds himself trapped on board just when the deadly baryon sweep begins. The unknown people aboard the ship are thieves seeking to make a tidy profit from their foray. Data meanwhile tries to improve his ability to engage in small talk. Written by garykmcd

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Release Date:

27 March 1993 (USA)  »

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Aspect Ratio:

1.33 : 1
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Did You Know?


Guest star Marie Marshall also appeared in two episodes of "Babylon 5", while guest star Patricia Tallman appeared on that show initially as a recurring character before being promoted to series regular. See more »


When Riker encounters Picard at the Turbolift, he says he was heading down to Deck 7, when they were on Deck 12. See more »


Counselor Deanna Troi: [about Data and "Hutch"] They're still at it.
Commander William T. Riker: Non-stop. I have to admit, it has a sort of strange fascination. How long can two people talk about nothing?
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References Die Hard (1988) See more »


Star Trek: The Next Generation Main Title
Composed by Jerry Goldsmith and Alexander Courage
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User Reviews

The Enterprise Seems to Have Some Real Vulnerability
29 September 2014 | by (United States) – See all my reviews

I liked this episode because it is full of suspense and some cliffhanger events, but it does beg the question that whenever they dock for repairs, they seem to get themselves in trouble. Basically, who is minding the store. While the ship sits in dry dock to have a baryon scan (whatever that is; sorry science majors), Picard decides to go onto the ship to pick up a saddle so he can ride a horse that is available to him. He has been inundated with requests and decisions to be made and needs a little time to himself. While he is on the ship, he realizes there are others. A group of potential terrorists with an agenda to get their hands on trilithium, an extremely volatile substance. It is led by a ruthless woman who is willing to kill her partners. When he is captured, Jean-Luc pretends he is the Enterprise's barber. He hatches a plan to derail their efforts. Meanwhile, the other significant crew members are being held hostage by the confederates of these guys and must devise their own plan. Of course, the deadly baryon scan is moving forward, killing any living thing, so time is of the essence. Very good cliffhanger.

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