Blood Oath (Star Trek: Deep Space Nine)

"Blood Oath" is the 19th episode of the second season of the American science fiction television series Star Trek: Deep Space Nine, and originally aired on March 27, 1994 in broadcast syndication. The story was created by Peter Allan Fields and the episode was directed by Winrich Kolbe. The choreography of the ending fight scene was created by Dan Curry and Dennis Madalone, while the score was created by Dennis McCarthy.

Set in the 24th century, the series follows the adventures on Deep Space Nine, a space station located near a stable wormhole between the Alpha and Gamma quadrants of the Milky Way Galaxy, in orbit of the planet Bajor. In this episode, three legendary Klingon warriors come to the station to meet with Jadzia Dax (Terry Farrell), before embarking on a crusade of vengeance.

The episode featured the return of John Colicos, William Campbell and Michael Ansara to the Klingon roles of Kor, Koloth and Kang, respectively. Each of those actors had previously portrayed the roles in episodes of the original Star Trek series. The story was based on the films Seven Samurai and The Magnificent Seven, and scenes were filmed on location in Pasadena, California, as well as on sound stages at Paramount Studios. The episode was watched by 8.4 million viewers, and the opinions of critics were mixed.