Rooney Mara has revealed that one of the great things about new character Lisbeth Salander is she is woman that you never really understand.
The actress takes over the role of Salander in David Fincher's American adaptation of the Steig Larsson novel The Girl With The Dragon Tattoo - in what is set to be her biggest role to date.
The film reunites her with Fincher after the pair worked together last year on The Social Network.
And the actress was on London on the red carpet earlier this week for the world premiere of the movie.
The film sees her team up with Daniel Craig, as he plays journalist Mikael Blomkvist.
The Girl With The Dragon Tattoo is released 26th December
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