LOOK: Supergirl's Family Celebrates In Season Finale Photos

Following the reveal of one photo from "Supergirl's" upcoming season finale, CBS has released the entire set of pics from the "Better Angels" episode. The pics include the return of a number of the show's season one guest stars, including Maxwell Lord (Peter Facinelli) and Eliza Danvers (Helen Slater). You can check out the images as well as a synopsis for the episode, which airs on April 18, below.

"Better Angels" -- Supergirl is forced to do battle with an unexpected foe and must risk everything -- including her life -- to prevent Non and Indigo from destroying every person on the planet, on the first season finale of SUPERGIRL, Monday, April 18 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

"Supergirl" airs on CBS on Mondays at 8 PM ET.

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