The good news: CW superhero TV series Supergirl and The Flash are planning a crossover episode—a dancing, musical crossover episode.
The better news: It will be packed with Broadway stars in cameo roles.
Variety reports that the episode, titled “The Duet,” will air March 21 as part of The Flash, about the ultra-fast superhero of that name.
Villain the Music Meister, who has the power “to control people through the power of song” reportedly will cause “all-singing, all-dancing shenanigans” that will force the Flash to team up with Supergirl to defeat him. The Music Meister will be played by Hedwig and Glee star Darren Criss, according to TVLine.