Go Behind The Scenes of The Flash ‘Supergirl’ Episode

This weekend Batman will fight Superman on the big screen in Batman v Superman: Dawn of Justice. On the small screen, this Monday, The CW’s The Flash leaves his Central City universe and joins CBS’s Supergirl in National City. The fans are excited, and as it turns out, so is the cast.

Supergirl’s Melissa Benoist, Mehcad Brooks Jeremy Jordan and The Flash’s Grant Gustin talk about the episode, how cool they thought it was that they could actually do the episode, how they don’t want to let down the already excited fans, jealous characters, and more in this behind the scenes interview: