It’s lights out on Glee, but thankfully not for good! During Season 4, Episode 20: "Lights Out," the power goes off at McKinley High, forcing all of the New Directions to “unplug” and perform only acoustic numbers. But that’s not all! This episode will also see the return of Blaine’s (Darren Criss) superhero alter-ego, Nightbird. Here’s your first look at all the McKinley-based drama in store from this episode.