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The Librarians: The Next Chapter S1E12 poster

Watch The Librarians: The Next Chapter – Season 1 Episode 12: And the Unfinished Business

The Librarians: The Next Chapter • Season 1, Episode 12 • 42 min • 2025 • ⭐ 7.9/10 • Action & Adventure , Sci-Fi & Fantasy

Cast: Callum McGowan , Jessica Green , Olivia Morris , Bluey Robinson , Caroline Loncq

Directors: Dean Devlin , John Rogers

Watch The Librarians: The Next Chapter – S1E12

Episode Overview

General Gregor retrieves the Sword of Mars and uses it to take over the country of Caucasylvia (remember from the Train episode), gaining control of their nuclear arsenal. The team must steal the Sword to prevent world calamity.

Episode Navigation

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More Episodes from Season 1

The Librarians: The Next Chapter S1E1 poster
S1E1 • 50m
And the Deadly Drekavac
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And the Dance of Doom
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And the Ghost Train
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And the Thief of Love
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And the Memory Crystal
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And the House of Cards
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And the Con-Con
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And the Hangover from Hell
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S1E9 • 43m
And the Feast of the Vampir
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And Going Medieval
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S1E11 • 42m
And the Graffiti of the Gods

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