In “Playing with Fire” in the November issue of Vogue, Jonathan Van Meter writes that David Fincher’s Girl with the Dragon Tattoo takes all kinds of risks—including casting newcomer Rooney Mara. Vogue.com traveled to the cover shoot in London earlier this year to talk with Mara about the audition process and how she transformed herself, both physically and emotionally, once she landed the once-in-a-lifetime role of Lisbeth Salander.