Max Gao SPOILER ALERT: This article contains spoilers from “If Walls Could Talk,” the Season 21 premiere of ABC’s “Grey’s Anatomy.” In 2012, Camilla Luddington tested for an unsold ABC pilot called “Gilded Lilys,” a soapy, 19th-century period drama executive produced by Shonda Rhimes. While Luddington didn’t land one of the roles, Rhimes’ production company, Shondaland, soon afterward asked her to audition for the ninth season of “Grey’s Anatomy” — a show that Luddington would try to watch live every Thursday.
