Supergirl Season 3 Episode 10
Legion of Superheroes
Struggling to heal from her injuries inflicted by Reign, Supergirl remains in a dreamlike state, unable to be reached. Mon-El recruits one of the Legion members, Brainiac-5, to try to bring her back. Meanwhile, Reign continues her rampage on the city so the DEO teams up with the Legion of Superheroes to try to stop her.
Guest Stars
Jesse Rath
Querl 'Brainy' Dox / Brainiac-5
Emma Tremblay
Ruby Arias
Amy Jackson
Imra Ardeen
Anjali Jay
Selena
Chad Lowe
Thomas Coville