Aired: Dec 04, 2017 , Monday at 20:00 on CBS

Currently Airing

Episode Summary: Supergirl investigates a mysterious symbol popping up all over National City, tracing its origins back to an ancient prophecy and the mark of the World Killer, Reign. Meanwhile, the tension between Lena and Morgan Edge continues to build, causing James to step in and offer up some protection, and possibly igniting a spark in the process.
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Winter Finale Kara and Reign Finally Clash on Christmas Eve

Although its naturally optimistic and family-friendly energy would lend itself perfectly to a holiday theme, Supergirl has never had a Christmas-focused episode. Yet in season 3 -- by far the darkest year of Supergirl yet -- Kara and her friends finally celebrate the holidays, but there isn't much cheer going around.This episode, titled "Reign," might be set right on Christmas Eve, but it's all about the end of the world as Reign and Supergirl have their first face-off. Supergirl's season 3 ... more


Holy cow, what a cliffhanger! Guys, there have been some EPIC fight scenes on this series, but the battle between Supergirl and Reign on Supergirl Season 3 Episode 9 may be the best one yet! We've seen Kara struggle before, but she usually gains the upper hand. That didn't happen this time.  Rarely do we see Kara bleed without the presence of Kryptonite, so we know this World Killer is no joke. She's arguably the toughest foe Kara has faced.  Now she's le... more



3 Crazy Theories About the Third Worldkiller on 'Supergirl'

Supergirl doesn't really need another villain for season 3. Reign has proved to be more than enough obstacle for Kara and the gang. That hasn't stopped the show from moving forward with the idea that Reign isn't the only Worldkiller.  The last Supergirl episode before the show's break, "Both Sides Now," revealed the second Worldkiller, Purity, but there's still one more to go. Considering how more

Did Alex and Kara Make the Right Decision About the Worldkillers on 'Supergirl'?

Before the introduction of Purity (AKA Julia Freeman), the question of the Worldkillers haunted fans, especially those who eventually want to see Sam redeemed and freed of Reign's negative influence. Season 3 episode 13 didn't specifically address how attached Reign is to Sam, but instead focused on Julia and Purity as they battled to get Julia back in control of her own consciousness, which drew a line in between Kara and Alex as they figured out what was going on. In the end, did they make the right decision for how they'll deal with these people?... more

Should Lena Become the Next 'Supergirl' Villain?

The story of Lena Luthor has been a complicated one on Supergirl. The sister of Superman's greatest enemy, Lex, Lena has become Kara's greatest friend. (Although Lena is completely unaware that Kara and Superman's cousin, Supergirl, are one in the same.) Since her introduction,  Supergirl has played with Lena's dark side and teased that she might be become as villainous as her brother and mother, Lillian. more




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