5 Ways The Flash-Supergirl Crossover Could Be DC's Winning Move

While Marvel has had the upper hand when it comes to its big-screen movies, it has been a different game on TV. ArrowThe FlashSupergirl and now Legends Of Tomorrow are showing a continued confidence in adapting DC superheroes for the small screen - something Marvel has only really started to explore in 2015 with the arrival of Daredevil and Jessica Jones.

But for the acclaim for the connected TV universe, DC have still come in for a lot of criticism for not linking it to their big screen counterparts. Ezra Miller has a hell of a lot to prove when he becomes part of The Justice League's Flash after Grant Gustin won fans over with his leading role on the TV series. And with Zack Snyder's Man Of Steel failing to get the same level of acclaim as the Marvel Cinematic Universe-founding Iron Man, this year's Batman V Superman: Dawn Of Justice has to be frankly brilliant to assure fans that the DC Cinematic Universe can be just as good as Marvel's.

But maybe DC has an ace in the hole. The announcement in the last week that The Flash will be crossing over into Supergirl but seem small considering the shows both share the same executive producers and crossovers are a regular thing for The Flash and Arrow, but it is a bigger event than you think. They're on different networks for a start, The Flash on The CW and Supergirl on CBS and most importantly they do not exist in the same world. There is no Superman in the Arrowverse and when Kara Danvers proclaimed herself the world's second superhero in Supergirl that was done in a world where the Flash or Arrow were not around.

So how will this work? And how could this crossover be DC's ace in the hole? Let's explore this with one world; multiverses...