Premise: Kathleen Erin Walsh ( born October 13 , 1967 ) is an American actress and businesswoman . Her roles include Dr. Addison Montgomery on the ABC television dramas Grey 's Anatomy and Private Practice , Rebecca Wright on the short-lived NBC sitcom Bad Judge , and Olivia Baker on the Netflix drama series 13 Reasons Why .
Hypothesis: Kate Walsh was on Grey's Anatomy.
Label: ENTAILMENT