Supergirl S03E01 - Girl of Steel

Episode Overview

Struggling with Mon-El's absence, Kara immerses herself in her role as Supergirl, tackling a new enigmatic danger looming over National City. Meanwhile, Alex opens up to Maggie about a secret regarding their upcoming wedding. A resident of National City reveals an intriguing link to Kara, prompting Lena to take a daring step forward.

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