If you’re a “Flash” and/or “Supergirl” fan, you probably know by now that both shows are crossing over later this month. 

The Flash will appear on the March 28th episode of “Supergirl” entitled “Worlds Finest.”  We got our first appearance of Supergirl on the February 9 episode of “The Flash” entitled “Welcome to Earth-2.”  We glimpsed her in the multiverse tunnel as Barry Allen and friends were crossing over an alternate Earth in another dimension.

Initially, CBS said that both shows were not going to be connected (especially since both characters live in completely different worlds).  But I’m assuming that they decided to reverse that decision in order to attract a bit of “The Flash’s” audience (and vise versa).  Plus, “The Flash” created a plot devise (the multiverse) that made it logical that both characters could now interact with each other without creating a narrative disruption to either show.

In terms of plot, not much is known yet.  All that’s been released is that Livewire and Silver Banshee are the villains and Grant Gustin’s The Flash is the only character to appear from his show.

So Supergirl.tv has posted a bunch of behind the scenes pics from this upcoming episode.  I’ll post a few below, but head over there to see a whole gaggle of them.

And if you’ve ever wondered who might win in a match-up between DC’s The Flash and Marvel’s Quicksilver, wonder no more!  Check out the entertaining video below the pics.