Tonight's "Glee" is all about guilty pleasures...and dirty secrets. Star Lea Michele took to Twitter today to hype the episode ahead of its debut on Fox.
— Lea Michele (@msleamichele) March 21, 2013
Fans can also expect new renditions on old classics from Wham!, Barry Manilow, Phil Collins and the Spice Girls!
Will you be tuning in to "Glee" tonight? Tell us in the comments and on Twitter!