CW | 8:00 pm

Supergirl (Melissa Benoist) is in a world of her own in the new episode "Legion of Superheroes," as the injuries she suffered from Reign (Odette Annable) leave her in something of a trance. Mon-El (Chris Wood) appeals to Brainiac-5 (guest star Jesse Rath) to try to restore the Girl of Steel to her normal state, as Reign continues to threaten National City. Chyler Leigh, Jeremy Jordan and David Harewood also star.