NCIS fans can look forward to some McGee family history this season, as well as the return of Robert Wagner and Ralph Waite as the fathers of Gibbs and DiNozzo, respectively. But what about the much-anticipated Abby story we've heard whispers about?

Given that Pauley Perrette was recently named the most popular star in all of primetime, it's no surprise longtime fans have been excited for this for some time.

Well, it turns out we won't be waiting much longer.

Executive producer Gary Glasberg tells TV Guide:

"We're going to actually get into a story line that's going to reveal something about Abby's past and her family that people aren't going to see coming. It's a revelation that she makes on her part... and it's going to tee up a mini-arc."

Any theories about what that might entail?

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