Unless Arrow used the Flashpoint timeline as a “Get out of death free!” loophole, Laurel 1.0 was dead.
Nyssa even ruled out Lazarus Pits as a way to resurrect her almost immediately after she died.
The reveal via trailer that original recipe Laurel Lance won’t be back will undoubtedly be a bummer for fans of her character, but it’s not a huge surprise.
It was always more likely that the person in the Bunker was an imposter, whether as a Laurel doppelganger from another Earth or a shapeshifter or even an android.
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Arrow 5x10 Extended Promo "Who Are You?" (HD) Season 5 Episode 10 Extended Promo