Geena Davis will be joining the cast of ABC’s Grey’s Anatomy in a guest arc for the show’s upcoming 11th season.

Geena Davis On 'Grey's Anatomy'

Davis will guest star on Grey’s Anatomy as a surgeon hitting the operating rooms of Grey Sloan Memorial Hospital, reported Variety. Details are scarce on Davis’ character, but the actress’s guest role is purported to be a major one.

Davis, who won an Oscar for her turn in The Accidental Tourist and received a nod for starring in 1991’s Thelma & Louise, last appeared in Lake Bell’s comedy In a World… (2013). Her last major role was on TV in political drama Commander in Chief in which she starred as President Mackenzie Allen.

In addition to Davis, Grey’s Anatomy fans can also expect to see Kate Burton. Though her character Dr. Ellis Grey died earlier on the series after a battle with Alzheimer’s, Burton will be returning to play a younger version of Meredith’s (Ellen Pompeo) mother. Series creator Shonda Rhimes will be reintroducing the character to provide the backstory for Ellis and Richard Webber’s (James Pickens Jr.) love child who is now working as the head of cardio at Grey Sloan Memorial.

Private Practice star Caterina Scorsone, who has played Derek’s (Patrick Dempsey) sister Amy, has been bumped up to series regular after making numerous appearances on Grey’s Anatomy in the show’s tenth season. Her role is growing bigger following Sandra Oh and her character Cristina Yang’s departure.

Grey’s Anatomy’s season 11 premiere will air Thursday, Sept. 25 on ABC at 8/7c

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