Sneak Peek: Tomorrow's All-New Glee Episode!

The Warblers' loss is clearly everyone else's gain on tomorrow night's all-new expanded 90-minute episode of Glee. Kurt is officially back at McKinley High, and in this sneak peek, cutie Darren Criss serenades him a fond farewell to Keane's "Somewhere Only We Know."

These kids sure know their slow jams.

Tune in to Glee at 8/7C on FOX.

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