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"Crisis on Infinite Earth: Part One"[2] is the ninth and midseason finale episode of the fifth season of Supergirl, and the ninety-sixth episode overall. It aired on December 8, 2019[1]. The episode is the first part of the five-part crossover, Crisis on Infinite Earths​.

Production

Shooting for Crisis on Infinite Earths began on September 24, 2019.[5]

Synopsis

The Monitor sends Harbinger to gather the worlds’ greatest heroes - Supergirl, The Flash, Green Arrow, Batwoman, White Canary, The Atom and Superman - in preparation for the impending Crisis. With their worlds in imminent danger, the superheroes suit up for battle while J'onn and Alex recruit Lena to help them find a way to save the people of Earth-38.[2]

References

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