In Search of Lost Time
Myr'nn inadvertently causes psychic disturbances at the DEO; Supergirl must work with J'onn to contain the chaos; Mon-El begins training Kara in fighting techniques he's learned in the future.

Cast
Melissa BenoistKara Danvers / Supergirl / Kara Zor-El
Chyler LeighAlex Danvers / Sentinel
David HarewoodJ'onn J'onzz / Martian Manhunter
Katie McGrathLena Luthor
Jesse RathQuerl 'Brainy' Dox / Brainiac-5
Nicole MainesNia Nal / Dreamer
Azie TesfaiKelly Olsen / Guardian
Julie GonzaloAndrea Rojas / Acrata
Staz NairWilliam Dey
Peta SergeantNyxlygsptlnz / 'Nyxly'Supergirl on tvt

