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For The Cause 

Sisko must face betrayal when evidence surfaces that Kasidy is smuggling for the Maquis. Meanwhile Garak makes acquaintance with Ziyal.


James L. Conway


Gene Roddenberry (based upon "Star Trek" created by), Rick Berman (created by) | 3 more credits »




Episode complete credited cast:
Avery Brooks ... Capt. Benjamin Sisko
Rene Auberjonois ... Odo
Michael Dorn ... Lt. Cmdr. Worf
Terry Farrell ... Lt. Cmdr. Jadzia Dax
Cirroc Lofton ... Jake Sisko
Colm Meaney ... Chief Miles O'Brien
Armin Shimerman ... Quark
Alexander Siddig ... Doctor Bashir
Nana Visitor ... Major Kira
Penny Johnson Jerald ... Kasidy Yates (as Penny Johnson)
Ken Marshall ... Michael Eddington (as Kenneth Marshall)
Tracy Middendorf ... Ziyal
John Prosky ... Brathaw
Steven Vincent Leigh Steven Vincent Leigh ... Lt. Reese
Andrew Robinson ... Garak


As Deep Space Nine awaits the arrival of equipment for the Cardassian government, Sisko fears the Maquis might do something about it and increases security. Eddington and Odo have an unpleasant message for him; they suspect Kasidy Yates is involved in smuggling for the Maquis. Meanwhile, Garak can't keep his eyes of Ziyal, and she returns his looks every time. Garak is still wary, though, as she's the daughter of his archenemy, Dukat, and under the protection of Kira, who isn't too fond of the tailor either. Written by Arnoud Tiele (imdb@tiele.nl)

Plot Summary | Plot Synopsis


TV-PG | See all certifications »

Did You Know?


This takes place in 2372. See more »


The scene in Garak's shop, Quark tells him that his "pants are about a meter too long." A meter is about 3 feet 3 inches and Quark is only 5'6", so this is either a goof in dialogue or Quark wants some short-shorts. Or, Quark is matching sarcastic barbs with Garak. See more »


[first lines]
Captain Sisko: Kasidy Yates, where are you going?
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Star Trek: Deep Space Nine - Main Title
Written by Dennis McCarthy
Performed by Dennis McCarthy
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User Reviews

Is Kasidy a traitor?
3 January 2015 | by MartinHaferSee all my reviews

When the show begins, you learn that some replicators are being secretly sent to the Cardassians by the Federation. Commander Eddington and Odo also approach Captain Sisko with a problem. They think that there's a good chance that Sisko's girlfriend, Kasidy Yates, is working with the Maquis*. But Sisko isn't about to just accuse her and he and his folks keep tabs on her and her space voyages. However, it turns out that this is all a ruse--and Eddington has ulterior motives. But what exactly is he up to?!

In addition to this plot, Mr. Garak has taken time away from his bromance with Dr. Bashir to may a lot of attention to Dukat's daughter, Ziyal. But this relationship, if there is one, is obviously fraught with problems since Dukat and Garak are sworn enemies.

Overall, this is a pretty exciting episode--mostly because it isn't stuck on DS9. Unfortunately, Eddington's behaviors were telegraphed in many ways, so none of this came as a huge shock--he obviously was never intended as a regular or one of the 'good guys'--a serious weakness of the show.

*Oddly, near the beginning of the show when Worf talks about the Maquis, he refers to them as the 'Marquis'.

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Release Date:

6 May 1996 (USA) See more »

Company Credits

Production Co:

Paramount Television See more »
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Aspect Ratio:

1.33 : 1
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