10 Most Frustrating Star Trek Moments Ever

10. Dukat Kills Jadzia

This entry is our jumping-off point as it was so utterly unnecessary for Deep Space Nine to lose Terry Farrell the way that it did. While the shocking nature of Gul Dukat transporting into the Bajoran Shrine, remorselessly killing Dax, and beaming away has still yet to properly fade from our minds, it’s long since been overtaken by the stories that came out on the way it came to be.

Farrell had, after six years of more than twenty episodes a season, approached the producers with the request to be reduced to a recurring character. Their response was that it was all, or nothing. Either she was going to be in every episode, like the other seasons, or none at all. Presented with such a choice, she elected to leave.

It was an unworthy exit for one of the main cast. To add further insult to injury, the seventh season saw both a mirror universe episode and a montage of previous episodes, neither of which featured Farrell. Both sides have stated that there were contract and permission issues, yet it boils down to a deeply unsatisfying exit for one of the most popular characters in Deep Space Nine.