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By Lizzy Buczak

On Supergirl Season 4 Episode 21, Supergirl faces off against the Red Daughter as they learn of Lex Luthor’s plan to take over the world. Will they stop him in time?

By TV Fanatic Staff

On Supergirl Season 4 Episode 21, Kara comes face to face with Red Daughter and the two engage in an epic battle, and Lena turns to Lillian Luthor for help.

By TV Fanatic Staff

On Supergirl Season 4 Episode 17, Supergirl faces her biggest challenge yet as she must deal with the destructive aftermath of Lex’s nefarious plans.