Supergirl S05E09 - Crisis on Infinite Earths: Part One (I)

Episode Overview

The Monitor dispatches Harbinger to assemble the most formidable heroes from across the multiverse: Supergirl, The Flash, Green Arrow, Batwoman, White Canary, The Atom, and Superman, all gearing up for an impending Crisis. With their realities at stake, the heroes prepare for the looming conflict, while J’onn and Alex enlist Lena's help in discovering a way to protect the inhabitants of Earth-38. This crossover unfolds further in Batwoman S1E09, The Flash S6E09, Arrow S8E08, and Legends of Tomorrow S05E01.

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