romola garai and rise byrne as stellar a two sister come of age and in virtual competition with each other . the film be center around their family life a they live in a old english castle circa 1930s . most of the film be tell from garai character point of view and through this you see her genius father slowly go insane a he struggle to survive the novelist sophomore slump and which isn not help along any by their eccentric mother . byrne character be a seductive vixen who have a guy who love her but she would rather chase after another and meanwhile her younger sister ( garai character ) be in love with the very same man whom her sister repels .