Star Trek: The Next Generation/Yesterday's Enterprise

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Yesterday's Enterprise
Airdate February 19, 1990
Production Number 163
Written by Michael Piller
Directed by David Carson
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Star Trek: The Next GenerationSeason Three
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Yesterday's Enterprise is the fifteenth episode of the third season of Star Trek: The Next Generation, and the sixty-third episode overall.

Guest Stars: Denise Crosby (Lt. Tasha Yar), Tricia O'Neil (Captain Rachel Garrett), Christopher McDonald (Jnr-Grade Lt. Richard Castillo), Whoopi Goldberg (Guinan)


Plot Overview

When the Enterprise-D encounters a temporal anomaly, the Enterprise-C appears from 22 years in the past. The very appearance of the ship from the past alters the timeline, such that the Federation and Klingon Empire are at war. This is due to the Enterprise-C not aiding a Klingon outpost from Romulan attack in the past before it came forward in time. Guinan realizes something is wrong, and convinces Captain Picard that the Enterprise-C must go back to its original time and intended fate...even if that fate is the vessel's ultimate destruction at the hands of the Romulan attackers.

Before the Enterprise-C can go back however, her Captain, Rachel Garrett, is killed. Tasha Yar, alive in this alternate timeline, agrees to go back with the Enterprise-C, since Guinan revealed to her that in the 'normal' timeline, she should be dead.

The Enterprise-C goes back in time moments before the Enterprise-D is destroyed by Klingons, thus restoring the proper timeline and history. The only person who knows something happened is Guinan.


Arc Advancement



  • Tasha Yar reappears aboard the Enterprise (due to the anomaly). Ultimately she sacrifices her life again to help the crew of the Enterprise-C.



The Show

Behind the Scenes

The Ambassador-class Enterprise NCC-1701-C was designed by Andy Probert and constructed by model maker Greg Jein.

Allusions and References

Memorable Moments



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