The CW has released the episode description for the 6th installment of Supergirl season 6. Supergirl season 6 episode 6 is titled “Prom Again!”.
Supergirl 6×6 “Prom Again!” Episode Guide
Young Kara (guest star Izabela Vidovic) experiences kryptonite for the first time, Nia (Nicole Maines) and Brainy (Jesse Rath) are trapped by invading aliens, and a young Cat Grant (guest star Eliza Helm) may be the reason Supergirl never gets out of the Phantom Zone.
Rob Wright & Jess Kardos written the episode directed by Chyler Leigh. Supergirl season 6 episode 6 airs on May 4 at 9|8c on The CW.