According to TV Guide, in addition to Kate Walsh returning to “Grey’s” for an alternate-reality episode called “If/Then,” in which Ellis Grey is still alive and Addison and Derek (Patrick Dempsey) are still married, “Private Practice” will get in on the action with an Amelia-centric episode that sees Caterina Scorsone traveling to Seattle. Derek and Lexi will also appear in the hour, which is scheduled for February sweeps.
The last “Grey’s”/”PP” crossover event also featured Amelia trying to reconcile with her brother, but considering she’s on the path to recovery now, we have a feeling this one might go better. As for the alternate reality “Grey’s,” though, we have no idea what to expect.
Both shows return to ABC’s lineup on Thursday, Jan. 5.