Supergirl returned for Season 4 on October 14, 2018.

Season 4 Episode 15 is titled “O Brother, Where Art Thou?” Here is the synopsis from TV Guide: “Secretly furloughed from prison due to failing health, Lex Luthor visits his sister, Lena, to seek her help finding a cure. Savvy as ever, Lena is suspicious of Lex’s motives but when she’s faced with a life and death situation, she must decide how she truly feels about her brother. Meanwhile, Supergirl and J’onn face off against Manchester Black.”

Don’t miss Supergirl “O Brother, Where Art Thou?” airing Sunday, March 17, 2019 at 8/7c on The CW.

Photos Courtesy of The CW

Video Courtesy of Supergirl Official Twitter

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