The CW has released poster art to promote the return of Supergirl Season 3.
Supergirl has been renewed for Season 4 by The CW.
Upcoming Supergirl episodes include "Of Two Minds," "Trinity," and "Shelter From The Storm."
Laurie Metcalf will be appearing in the Supergirl episode "Schott Through The Heart."
Preview images for the Supergirl episode "Legion of Super-Heroes"
The CW has revealed a new trailer for the "Legion of Super-Heroes" episode of Supergirl, revealing Jesse Rath as Brainiac 5
Official CW description for the Supergirl Winter Premiere "Legion of Super-Heroes"
Screen captures from the preview trailer for the Supergirl episode "Legion of Super-Heroes"
Preview trailer for the Supergirl midseason premiere "Legion of Super-Heroes"
Official preview images for the Supergirl episode "Ace Reporter"