DC Comics fans have been waiting for the Supergirl crossover with The Flash for months. Yes, that’s nowhere near as long as the almost three-year span Batman v Superman fanatics endured, but CBS and CW viewers still had to wait. They started waiting in November, when rumors first broke of a possible appearance by Kara Danvers (Melissa Benoist) in the world of Barry Allen (Grant Gustin), S.T.A.R. Labs and the rogues gallery. They were still waiting when producer Greg Berlanti fielded questions in January, saying he “would love it” without confirming or denying anything. And now? “Worlds Finest,” the eighteenth entry in Supergirl‘s 20-episode first season, has finally arrived and it’s wonderful.
With a story by Berlanti and a script co-written by Supergirl and The Flash regulars Michael Grassi and Andrew Kreisberg, “Worlds Finest” delivers the superhero (and supervillain) team-up that the audience wanted, and then some. Like the Legends of Tomorrow premiere, which produced just enough cheese to appease comic book fans, Arrow and The Flash viewers, and anyone else who might like a show about time-traveling heroics, “Worlds Finest” manages to balance just enough narrative closure and development with its advertised promise — Danvers and Allen joining forces for a time. There’s plenty of cheese to go around, of course, but that hasn’t hurt Berlanti’s widening DC Comics television universe so far. (Lactose intolerant audience members notwithstanding.) How about another slice?
The premise is quite simple. At the end of last week’s “Manhunter,” Siobhan Smythe (Italia Ricci) discovered her ability to emit a high frequency series of shock waves via her mouth. In other words, she could scream really, really loud. After a brief round of testing at the Department of Extranormal Operations, Smythe attacks Kara at Cat Grant’s (Calista Flockhart) office. Her sonic blast disorients Kara and knocks her out of the building, sending her gravity’s way until… the Flash suddenly blasts into this particular earth, saves Kara from what everyone else thought was certain death and whisks her away to safety.
Even if you’re familiar with the multiverse theory posited by The Flash, that bit about “this particular earth” might be confusing. As for Supergirl viewers who aren’t as nerdy as those who tune in to The CW a couple of times a week, it’s probably really confusing. Before I explain myself, here’s a GIF: