Episode 8— Crisis on Earth-X (I)
Aired November 27, 2017 · 42 min

Synopsis
Barry and Iris's wedding is disrupted by an attack from villains from Earth-X, forcing the superheroes to unite with allies such as Citizen Cold, The Ray, Felicity Smoak, Iris West, and Alex Danvers. Green Arrow, Supergirl, The Flash, and White Canary lead the combined teams in a battle against their most powerful enemies.
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