Kate Walsh returns as Addison Montgomery in Grey’s Anatomy season 22 episode 10. Here’s what to know about her one-episode appearance, Amelia Shepherd’s return, and current storylines ...

More than 16 years after Kate Walsh made her splashy “Grey’s Anatomy” debut as Dr. Addison Montgomery-Shepherd, the then-unmentioned estranged wife of Dr. Derek Shepherd (Patrick Dempsey), the actor ...