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"Prom Again!"

CHYLER LEIGH MAKES HER DIRECTORIAL DEBUT – Part two of the flashback episodes pick up where things left off – 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. Chyler Leigh directed the episode written by Rob Wright & Jess Kardos (#606). Original airdate 5/4/2021