A new villain comes to National City, putting Supergirl on high alert. Meanwhile, Winn’s girlfriend, Lyra, gets Winn in trouble with the law. Maggie attempts to help Winn but old loyalties get in the way. The Music Meister attacks Supergirl.
The crossover continues on The Flash S03E17 Duet (II).
Quest roles:
Tamzin Merchant(Lyra Strayd), Teri Hatcher(Rhea), Kevin Sorbo(Lar Gand), Darren Criss(Music Meister), Lauren Jackson(Handmaiden), Natasha Burnett(Supreme #1), Tori Katongo(Supreme #2), Favour Onwuka(Supreme #3), Paul Lazenby(Goon), Robert Zen Humpage(Fish Head), Jason Vaisvila(Boris), Ben Sullivan(Guard), Tom Walsh(Stage Manager), Jason Diablo(Gang Leader), James Michalopolous(Igor Starros), Shaughnessy Redden(Kryptonian Emissary), Graham Parkhurst(Bastian)