The Flash and Supergirl Crossover Officially Happening http://www.denofgeek.us/tv/supergirl/252570/the-flash-and-supergirl-crossover-officially-happening
The Flash will appear on an episode of Supergirl set to arrive in March. Here's what we know...After nearly a year of speculation, it's finally official. The Flash and Supergirl are joining forces. Specifically, Grant Gustin's Flash will appear on an episode of Supergirl.“We are so incredibly excited to announce something that we have dreamed of happening since we started making Supergirl – The Flash and Supergirl are teaming up!” said The Flash and Supergirl executive producers Greg Berlanti and Andrew Kreisberg in a statement. “We want to thank Grant Gustin for making the time to come visit (on top of his already immense workload) and all of the folks at CBS, The CW, Warner Bros., and DC for working this out. And finally, thanks to the fans and journalists who have kept asking for this to happen. It is our pleasure and hope to create an episode worthy of everyone's enthusiasm and support.”