Star Trek: Voyager, season 3, episode 2
Flashback
Summary
Tuvok experiences brain-damaging flashbacks to his service on the USS Excelsior under Captain Hikaru Sulu. He and the captain attempt to find the reason for the flashbacks, believed to be a suppressed memory, through a joint mindmeld. Special guest stars: George Takei and Grace Lee Whitney.
Summary from Wikipedia, CC BY-SA 4.0.
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