With one last mystery to solve, the team sprung into action.
The fate of the world was up in the air on Salvation Season 2 Episode 13 and with the asteroid headed for Earth, it was do or die time as one last key to save everyone was in play.
Meanwhile, Grace was under the impression the end was near and set out to spend her final days doing something she always wanted to.
However, an old friend wanted her assistance with something.
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.