Supergirl Season 3 Episode 21 Not Kansas ( Air Date 2018-06-04 ) Genre Drama, Sci-Fi & Fantasy, Action & Adventure category. Overview "Kara makes a major life decision. Meanwhile, J'onn finds out that special DEO-caliber guns have hit the streets of National City.".
Supergirl Season 3 Episode 21 Not Kansas
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- Watch: Supergirl Season 3 Episode 21 Not Kansas on CWR-CRB
- Stars: Melissa Benoist, Chyler Leigh, David Harewood, Katie McGrath, Jesse Rath, Nicole Maines, Azie Tesfai, Julie Gonzalo, Staz Nair, Peta Sergeant
- Director: Jess Kardos, Nicki Holcomb, Dawn Mills, Elle Lipson, J. Holtham, Rob Wright, Derek Simon, Victoria J. Auth, Jay Faerber, Jesse Warn, Karen Maser, Tila Datta, Emilio Ortega Aldrich, Andrea Desroches, Chris Pavoni, Judy Andreson, Simon Burnett, Rebekah Bak, Nazgol Goshtasbpour, Lindsay Sturman, Dana Horgan, Saray D. Guidetti, Jen Troy, Joanie L. Woehler, Jennifer Lence, Carl Ogawa, Jessica Queller, Daniel James Chan, Jennifer Carpenter Hernandez, Gabe Hilfer
