Aired: Feb 05, 2018 , Monday at 20:00 on CBS

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Episode Summary: The DEO captures a second Worldkiller, Purity. Supergirl and Alex use very different methods of interrogation with Purity in the hopes of finding out how to defeat Reign. However, Purity escapes and attacks the city's subway tunnels. Meanwhile, J'onn, Winn and Mon-El band together to fix the Legion ship.
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Everyone Battles for Control of the Second Worldkiller

Since Supergirl's return from winter break, season 3 has been on a hot streak of episodes. The deep dive into the Reign storyline has invigorated Supergirl like never before, giving some very tense and action-packed installment. Now that streak is coming to an end -- or at least hitting the pause button. This episode, titled "Both Sides Now," is the last before a nine-week break for Supergirl, where Legends of Tomorrow will take over its timeslot. It is rather annoying that Supergi... more

Both Sides Now

Oh, the irony.  Lena still doesn't know that Kara is Supergirl or that her boyfriend is Guardian, but she may have just discovered something on Supergirl Season 3 Episode 13 that no one else on Team Supergirl has been able to figure out yet.  The question now is, assuming Lena has figured out Sam is Reign, how does she plan to make her "better"? Will Lena try to help Sam on her own, or will she contact Alex? She knows Sam went to her with her symptoms, so it would m... 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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