Marisol Nichols, Benjamin Bratt

Should Addison and Jake fans be worried?

GCB alum Marisol Nichols has landed a guest-starring role on Private Practice, TVGuide.com has learned exclusively.

Exclusive Private Practice First Look: Alfre Woodard, Richard Roundtree come to town!

Details on her role are being kept under wraps, but Nichols will appear in the Jake-centric episode, "The World According to Jake." Could this mean she's coming between Jake (Benjamin Bratt) and Addison (Kate Walsh)? You'll have to tune in to the episode, slated for mid-November, to find out!

Nichols, whose credits also include The Gates, 24 and Cold Case, portrayed single housewife Heather Cruz on GCB.

Private Practice airs Tuesdays at 10/9c on ABC.