Margo "Go" Dunne is one of the main characters and tritagonist in Gone Girl. The twin sister of Nick Dunne, Margo sticks by his side when he is accused of the murder of his wife Amy. But when evidence is piled up also effecting Margo, she becomes ridiculed by the media as well. Can they prove her brothers innocence?

She is portrayed by Carrie Coon.

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