The first season of Supergirl concludes tonight on CBS with "Better Angels."
Preview clips for the Supergirl season finale episode "Better Angels"
Promotional trailer and preview images for the Supergirl season finale, titled "Better Angels"
Preview images for the Supergirl Season Finale episode "Better Angels" airing April 18 on CBS
Official description and first photo for the Supergirl Season 1 finale, titled "Better Angels"
