Sneak Peek new footage, plus images from "Supergirl", Season 4, episode 13, titled "O Brother, Where Art Thou?", directed by Tawnia Mckiernan , March 17, 2019 on The CW, guest-starring Jon Cryer ("Two and a Half Men") as 'Superman' nemesis 'Lex Luthor':
"...secretly furloughed from prison due to failing health, 'Lex Luthor' (Cryer) visits his sister 'Lena' (Katie McGrath), 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' (Melissa Benoist) and 'J'onn (David Harewood) face off against 'Manchester Black' (David Ajala). Then James' sister 'Kelly' (Azie Tesfai) comes to town..."
Click the images to enlarge and Sneak Peek "O Brother, Where Art Thou?"...