Songs featured include "Science Fiction/Double Feature," "Dammit Janet," "What Ever Happened to Saturday Night?," "Sweet Transvestite," “Touch-a, Touch-a, Touch-a, Touch Me," "Over at the Frankenstein Place" and "The Time Warp."
It has also been reported that the episode will feature guest appearances by Meat Loaf and Barry Bostwick, who appeared in Richard O'Brien’s cult musical movie.
Here is a sneak peek behind the scenes of "The Rocky Horror Glee Show":
Chris Colfer as Riff Raff
Adam Rose/FOX
Matthew Morrison rehearses with Kevin McHale
Adam Rose/FOX
Chris Colfer gets in hair and make-up for the role of Riff Raff
Adam Rose/FOX
Behind the scenes with Heather Morris.
Adam Rose/FOX
Chris Colfer as Riff Raff
Adam Rose/FOX
John Stamos
Adam Rose/FOX
Kevin McHale
Adam Rose/FOX
Heather Morris
Adam Rose/FOX
John Stamos, Cory Monteith and Lea Michele
Adam Rose/FOX
John Stamos
Adam Rose/FOX
Harry Shum Jr.
Adam Rose/FOX
Behind the scenes with Kevin McHale and Jenna Ushkowitz
Adam Rose/FOX
Jenna Ushkowitz and Harry Shum Jr. rehearse
Adam Rose/FOX
Chris Colfer
Adam Rose/FOX