A Sneak Peek at "Glee"

Here's a sneak peek of tomorrow night's "Rocky Horror Glee Show" episode of Glee...

Here are Rachel (Lea Michele) and Finn (Cory Monteith) as Brad and Janet...

Here's Tina (Jenna Ushkowitz) and Kurt (Chris Colfer) playing Riff-Raff...

The special episode of "Glee" airs Tuesday, October 26th at 8 p.m. on FOX. The soundtrack is available in stores now...

Photos Credit: Adam Rose/FOX