Star Trek: Deep Space Nine: Season 4, Episode 21

For the Cause (6 May 1996)

TV Episode  -   -  Action | Adventure | Drama
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Ratings: 7.7/10 from 388 users  
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Sisko must face betrayal when evidence surfaces that Kasidy is smuggling for the Maquis. Meanwhile Garak makes acquaintance with Ziyal.



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Title: For the Cause (06 May 1996)

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Episode cast overview:
Michael Eddington (as Kenneth Marshall)
Steven Vincent Leigh ...
Lt. Reese


Deep Space Nine awaits the secret arrival of 12 industrial replicators 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 however. They suspect Kasidy Yates is involved in smuggling for the Maquis. Sisko is angry about the accusation at first. He refuses to let Odo survey her, but finally agrees to a cargo check. Then Kasidy asks him to skip the inspection. Sisko agrees, but sends the Defiant after her. Meanwhile Garak can't keep his eyes of Ziyal and she returns his looks with a smile every time. Garak is still wary though. She is after all the daughter of his archenemy Dukat and under the protection of Kira, who isn't too fond of the tailor either. Then Ziyal offers him a meeting in a Cardassian holosuite program. Written by Arnoud Tiele (

Plot Summary | Plot Synopsis

Plot Keywords:

24th century | See All (1) »





Release Date:

6 May 1996 (USA)  »

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Technical Specs

Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


This is the only time when Tracy Middendorf played Ziyal, daughter of Gul Dukat. Cyia Batten had played the character previously, and Melanie Smith took over the role later in the series. 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

10 June 2010 | by (United Kingdom) – See all my reviews

When Odo and Commander Eddington inform Captain Sisko that his girlfriend Kasidy Yates is suspected of smuggling supplies to the Marquis he is disbelieving. However there is enough circumstantial evidence so he agrees to let all departing ships be searched. When Odo goes to search her ship Kasidy tells the Captain that she must be allowed to go as she is transporting medical supplies to a race who insist on punctuality. The captains lets her go but without telling her he dispatches the Defiant to follow her. As feared she deviates from her course and transports her cargo to a Marquis raider in the badlands. Sisko decides to personally follow her on her next run to catch her in the act and establish what she is giving to the Marquis. While doing this he leaves Commander Eddington in charge of the station so he can supervise the shipment of some industrial transporters to the Cardassians. Once again Kasidy goes into the Badlands but no Marquis come to meet her; after waiting to see what will happen the Captain realises it has all been a distraction to keep him away from the station. When he gets back he discovers that Eddington was working for the Marquis and the transporters have been stolen. In a secondary story Garak is getting closer to Dukat's daughter Ziyal even though he suspects her interest in him might be so she can do him harm and Major Kira has warned him to keep clear of her.

This was a pretty good episode with a couple of surprises, I didn't expect Kasidy would have been smuggling to the Marquis nor did I expect semi-regular character Eddington to turn out to be a traitor. The secondary story was enjoyable, Andrew Robinson's Garak is always fun, especially when he is being paranoid and Tracy Middendorf put in a good performance as Ziyal, making her a likable character.

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