Supergirl (2015)
S4E21 Red Dawn
Episode Overview
Kara confronts Red Daughter, leading to an intense showdown between them. Meanwhile, Lena seeks assistance from an unexpected ally, Lillian Luthor, in her quest to retrieve the Harun-El. On another front, Alex discovers that some of her memories are lost, prompting Brainy, Nia, and J'onn to embark on a mission to locate aliens who have fallen victim to Lex's abductions.
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S4