Watch Supergirl/The Flash Crossover Event First Teaser
- Michelle Brooks
- Mar 16, 2016
- 1 min read
In the upcoming Supergirl episode titled 'World's Finest', Barry accidently travels to an alternate universe and lands in National City. He and Supergirl must team up gainst Banshee and Live Wire while simaltaneously find a way to return Barry to his rightful universe.
