Supergirl season 3 episode 21 is airing on The CW come Monday night and at the center of this one is going to be one super-important question for National City: Can they make do while Supergirl is away? Are they going to be able to handle that?
Well, the new sneak peek below via TVLine gives you a pretty good sense as to precisely what is coming up — and, to go along with that, some of the problems that are coming at the DEO. While Kara is off seeing her mother, there is another issue in DEO weaponry that has found its way onto the streets. It doesn’t appear, at least on the surface, to be an issue of Reign running around and causing chaos; instead, we’re dealing here with something totally different. Dealing with this sort of advanced weaponry is no easy task, and we say that especially when you consider that Supergirl is not immediately available in order to lend a helping hand. She’s off somewhere else, meaning that some of our characters are going to be left to their own devices in order to figure out precisely how they want to deal with this particular issue.
Are they going to be able to figure this out? For now, we’re largely optimistic just because of the fact that we know what some of these other characters are capable of. They can and should be able to tackle this sort of issue without Kara, provided that they use the right strategy to figure it out.
Their larger issue may come once Kara realizes that she and Earth may be in more trouble than they first realized. While she may be able to vanquish Reign, there is another foe that is waiting right around the corner in Serena — the person who is really the architect of everything. (Read more about her just by heading over to the link here.)
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