They guest stars just keep coming back! Both Real Housewife NeNe Leakes (Coach Roz) and former Sex and the City star Sarah Jessica Parker (Isabelle) are back for Glee Season 4, Episode 20: "Lights Out." 

FOX has released the official episode synopsis — and since it’s the third-to-last episode of Season 4, you know things are starting to get intense!

When the power goes out at McKinley High, Will (Matthew Morrison) and Finn (Cory Monteith) enlist the members of New Directions to “unplug” and perform acoustic numbers. Meanwhile, Isabelle Wright (guest star Sarah Jessica Parker) asks Kurt (Chris Colfer) to volunteer at the Vogue.com charity event, with Rachel (Lea Michele) and Santana (Naya Rivera) in tow.

Sadly, this will be the last episode we get to see with Finn this year. Because of actor Cory Monteith’s decision to enter rehab, Finn will not appear in either of Season 4’s final two episodes. However, it seems like the show still has every intention of bringing him back for Season 5.

While the New Directions are on some sort of top secret Argo mission over at McKinley, Rachel, Isabelle, Kurt and Santana will be performing “At the Ballet” from A Chorus Line. We even get to meet their 5-year-old alter-egos. One word: adorable.

Source: FOX press release