While Cumberbatch plays Phil Burbank, Dunst plays his brother George's wife, Rose Gordon.The duo decided to stay away from each other while filming so they could capture the essence of their character's tension and strained relationship.In a new interview, Dunst explained to Radio Times: “I isolated myself from Benedict."We didn’t talk at all during the filming unless we were out to dinner on a weekend, all together, or playing with our kids."She added of his impeccable manners: "He’s so sweet.
And he’s so British!"Polite British, you know? I was like, ‘I can’t talk to you!'"Cumberbatch also spoke out about their relationship on-set, telling NME: "I didn't want to be really mean to Kirsten, but I needed to stay in character."So I didn't.
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