Characters returning to a TV series after they’ve been killed off is becoming a cliché of science-fiction. Let’s make of list of all the ways this has happened in Trek (include twin brothers or other relatives played by the same actor).
I'll start with Tasha Yar (ST: TNG) who was killed by an oil-slick alien, only to come back in an alternative universe, who then had a half-Romulan daughter who returned to plague Picard.
I'll start with Tasha Yar (ST: TNG) who was killed by an oil-slick alien, only to come back in an alternative universe, who then had a half-Romulan daughter who returned to plague Picard.