Supergirl is GONE. Forever! Show’s over. At least for the next episode. Meanwhile, who could save Earth?! No one. Earth is gone. Let’s react.

Info: “Not Kansas” Season 3 Episode 21 Extended Promo - KARA CONSIDERS A MAJOR LIFE CHANGE – Kara (Melissa Benoist) makes a major life decision. Meanwhile, J’onn (David Harewood) finds out that special DEO-caliber guns have hit the streets of National City. Dermott Downs directed the episode written by Gabriel Llanas & Anna Musky-Goldwyn (#321).