Caitlin died in the third season after she'd been impaled by a middle bar. Julian then took off the necklace she had and she came back to life, only not as Caitlin, but as the villainous Killer Frost. That proves that sometimes it's a good thing to be a villain in the Arrowverse.

Does Caitlin Snow come back?

No, Danielle Panabaker is not leaving The Flash. Though Frost may be behind bars, the OG Team Flash star will be sticking around as Caitlin Snow. ... But no, as of writing, Panabaker will be remaining on the show as a series regular.

Is Caitlin leaving The Flash?

Caitlin Snow (Danielle Panabaker), to announce that he and his girlfriend Kamilla (Victoria Park) will be leaving Central City. Both express their readiness, at this stage of their lives, for a new chapter.