Read previewYou might have heard Hannah Waddingham refer to filming her waterboarding scene in "Game of Thrones" as "the worst day" of her entire life. During the interview, she reflected on another trying filming experience: her time as Septa Unella on "Game of Thrones." This story is available exclusively to Business Insider subscribers. Septa Unella's death scene in "Game of Thrones." AdvertisementHeadey, who was on the opposite side of the scene, told Business Insider in 2021 that it was a "shit time" for Waddingham.

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Persons: —, Hannah Waddingham, Waddingham, Stephen Colbert, Guy, Cersei Lannister, Lena Headey, strapping, Cersei, Ser Gregor Clegane —, showrunners David Benioff, Weiss, Colbert, HBO Waddingham, Headey, Hannah Organizations: Service, Septa, Business, Netflix, HBO