Jennifer Morrison Back for House Series Finale!

Once Upon a Time actress gets ABC's blessing to return to Fox series. Will she bring her new fiery hair with her?

Dr. Cameron is in the House, y'all!

And that bad pun aside, House fans certainly have a reason to celebrate this morning, as a source close to production confirms that Jennifer Morrison (now starring on Once Upon a Time but formerly an integral cast member on House) is set to appear in the series finale.

So what are the deets?

They're being kept very secret, naturally. After all, this is the series finale (set for May 21), and the producers want the fans to be surprised. So promise us you'll gasp when you see JeMo onscreen?

A Fox spokesperson for the series declined to comment.

However, a source confirms the news (first reported by my frenemy at TVLine) that Morrison has shot a cameo for the series finale. I'm told it will be a brief but meaningful appearance, and that the finale was shot last week.

Yep, fellow fans, the show is officially out of production and the cast is moving on.

Anyone have some pain meds? (Kidding.) (A little.)

Stand by for more House scoop as the May 21 finale approaches. Kal Penn, Olivia Wilde and Amber Tamblyn are also set to appear. And we are still told that Lisa Edelstein will not.

Here's hoping Jennifer's new, fiery red hair will bring some fiery new flavor to Cameron! Jennifer did have her red hair as of last week, when the finale was shot.