NCIS fans longing for a McGee-centric episode will soon get their wish, in surprising fashion:

Sean Murray's character will be going undercover with Gibbs and Fornell's ex-wife, Diane!

Executive producer Gary Glasberg confirms that Melinda McGraw will reprise her role as the former Mrs. Gibbs and Mrs. Fornell (and current Mrs. Sterling) in December, and the show-runner had this to say:

“This time she not only has to work undercover with them, she has to spend the night with Special Agent Tim McGee as well. Amidst the chaos, Gibbs and Fornell find their ex asleep on the sofa with Tim."

"In the words of one of my favorite films, ‘Ex Mrs. Boss, are you trying to seduce me?!’ You’ll have to wait and see what McGee has gotten himself into.”

McGraw first appeared in last season's "Devil's Triangle," in which her current spouse became the target of an investigation that brought her FBI and NCIS agent exes together in pursuit.

Excited for this episode, and for Diane's return? How do you think it will play out? Comment below!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.