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Sins of The Father 

A Klingon commander comes aboard the Enterprise in an officer exchange program initiated by Starfleet, much to the chagrin of the crew.


Les Landau


Gene Roddenberry (created by), Ronald D. Moore (teleplay by) | 3 more credits »




Episode complete credited cast:
Patrick Stewart ... Capt. Jean-Luc Picard
Jonathan Frakes ... Cmdr. William Riker
LeVar Burton ... Lt. Cmdr. Geordi La Forge
Michael Dorn ... Lt. Worf
Gates McFadden ... Dr. Beverly Crusher
Marina Sirtis ... Counselor Deanna Troi
Brent Spiner ... Lt. Cmdr. Data
Wil Wheaton ... Wesley Crusher
Charles Cooper ... K'mpec
Tony Todd ... Kurn
Patrick Massett ... Duras
Thelma Lee Thelma Lee ... Kahlest
J. Teddy Davis J. Teddy Davis ... Transporter Technician (as Teddy Davis)


Commander William T. Riker is charged with hosting Klingon commander Kurn, who takes his place as first officer as part of an exchange program. As expected, his ruthlessly authoritative command style gets on everyone's nerve, but the worst is yet to come: Kurn reveals himself as Lieutenant Worf's younger brother, and demands he joins him in dealing with a blood feud, as their late father's honor is challenged by accusations of treason to the Empire in league with the Romulans during a bloody attack. The Enterprise sets course to the Klingon first city, while Picard fears legal and diplomatic repercussions. Data finds indications the Klingon records were doctored, possibly at Klingon High Council level, so the Enterprise crew sets out to find out the truth... Written by KGF Vissers

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TV-PG | See all certifications »

Did You Know?


In an interview Michael Dorn revealed that the events of this episode altered his perception of Worf, and influenced how he played the part from then on. He said, "There was a lot more involved in it than the writers realized. Things that have to do with Klingon loyalty and honor. They didn't give it its due. You look at Worf in a different light, and I've played him in a different light since that episode. This is not something they have come up with. I'm doing this on my own. Hey, it's their fault. They wrote it. So now, I'm going to carry on with it." See more »


Picard gives the order to "set course for the Klingon Imperial Empire." This is redundant, as "Imperial" is an adjective meaning "of or relating to an empire." See more »


Lieutenant Worf: So, you asked to serve aboard the Enterprise to watch me.
Kurn: It was an excellent opportunity to see what kind of Klingon you were - or if you were Klingon at all.
Lieutenant Worf: Your deception offends me, Brother.
Kurn: It should. But it was required.
Lieutenant Worf: To satisfy your curiosity.
Kurn: No. Much more. You are the eldest son. The challenge is yours to make.
Lieutenant Worf: [perplexed] Challenge?
Kurn: The Klingon High Council has judged our father a traitor to the Empire.
See more »


Referenced in Star Trek: Picard: Remembrance (2020) See more »


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

His heart is Klingon
9 November 2016 | by Mr-FusionSee all my reviews

'Sins of the Father' has the distinction of being the single most overused title for a TV episode in history. Second maybe to "Pilot", but it feels like every single TV show has an episode with this name; a total cliché. Add to that my lack of favor with Worf, and this episode didn't have me overexcited. But I absolutely underestimated it because it's another high point for this season.

We learn so much here, whether it's Klingon law or Worf's heritage. Not only does he discover a sibling, but the integrity of his very bloodline rests at the mercy of a kangaroo court. In the end, good prevails, but at a high cost. And even though it's Worf's story, it's Patrick Stewart who owns this. His intensity is perfect, and Picard's moments with Worf really underlines the bond between a captain and his crewman.

It's great drama.


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English | Klingon

Release Date:

17 March 1990 (USA) See more »

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Production Co:

Paramount Television See more »
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Aspect Ratio:

1.33 : 1
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