The Flash and Supergirl team-up to tackle the Music Meister's melodic malevolence, featuring Glee's Darren Criss! Also, Victor Garber and John Barrowman!
The Flash is as true to its roots as a show could be with its use of alternate timelines and realities... which just might include the 1990 series as well.
In a world of super-powered beings, a select few at Retcon Insurance have taken the matter of civilian safety into their own hands. They are the Powerless!