Kathleen Erin "Kate" Walsh (born October 13, 1967) is an American film and television actress, currently known for her role as Dr. Addison Montgomery on the ABC dramas Grey's Anatomy and Private Practice.
A newly widowed insurance investigator handling the case of a woman in a coma after a car accident encounters her spirit when he visits her in a hospital one day and realizes that he is the only person who can see her.
