ST Voyager? Explain. (Because of Jeri Ryan I watched most of these. It it was the WORST ST series )
imdb link to episode:
http://www.imdb.com/title/tt0708896/plotsummary?ref_=tt_ov_pl
“While Ensign Kim begins experiencing bizarre DNA changes, he instinctively leads Voyager to a planet whose inhabitants claim Kim is really a member of their race and is ritualistically returning home. When his welcome seems too good to be true, Kim loses contact with Voyager and begins to uncover the alien’s true intentions. “
guest star: Patrick Fabian, of Better Call Saul.
Hopefully this jogs your memory without a spoiler.
And yes, Jeri Ryan made it worth tuning in for.