Kate Walsh is set to co-star opposite Dylan Minnette and Katherine Langford on Netflix‘s 13-episode series 13 Reasons Why, from producer Selena Gomez, writer Brian Yorkey, director Tom McCarthy, Anonymous Content and Paramount TV. The casting comes on the heels of Walsh signing with Gersh and Luber Roklin. Also cast in 13 Reasons Why is Derek Luke (Empire).

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Yorkey created and wrote the TV series adaptation of the 2007 New York Times bestselling YA book by Jay Asher, which follows a boy named Clay (Minnette) through an emotional night when he receives a shoe box of cassette tapes from his late classmate and crush Hannah (Langford), following her recent suicide. On the tapes, which are mailed with instructions to pass along from one student to another, Hannah explains to 12 peers how they each played a role in her death, by giving 13 reasons explaining why she took her life.

Walsh will play Hannah’s mom. Luke plays Hannah’s guidance counselor Mr. Porter.

McCarthy and Gomez executive produce alongside Yorkey, Diana Son and Anonymous Content’s Joy Gorman, Michael Sugar and Steve Golin, as well as Mandy Teefey and Kristel Laiblin. Filming on the series began this week.

Walsh, who was most recently at WME for almost a year, is best known for playing Dr. Addison Montgomery on ABC’s Grey’s Anatomy and toplining spinoff Private Practice which ran for six seasons. She also starred in the NBC comedy series Bad Judge and recurred on the first season of Fargo on FX. Her feature credits include Kicking And Screaming, Under The Tuscan Sun and The Perks Of Being a Wallflower. Walsh is also repped by Morris Yorn.

Luke, repped by ICM Partners, Greenlight Management and Ziffren Brittenham, recently recurred on Roots and Empire and had a major role on Rogue.