Good luck untangling the twisted mess that is the family tree at the center of Tracy Letts‘ soon-to-be-adapted play, August: Osage County. Of course, that’s all part of the story of the Pulitzer Prize-winning production, but it makes confirming casting notices for John Wells‘ film version a real beast. Letts’ play centers on the Weston family, led by patriarch Beverly Weston and his sick, pill-popping wife Violet. Set during the month of August in the Weston’s hometown of Pawhuska, Oklahoma, the play opens with a prologue that features Beverly as he attempts to hire a nurse for his, for lack of a better word, cracked out wife (to be played by Meryl Streep). While that introduction might make it seem as if it’s Violet who will soon wither, Act One hits us with the hard truth – Beverly has committed suicide, leaving Violet alone to deal with his death and the rest of their family. They are not a happy family. And they have much bigger issues to deal with than just one measly suicide. Most of the conflict of August: Osage County is between the various Weston women – especially between Violet and her eldest daughter, Barbara Fordham (Julia Roberts) – but there are two other Weston girls to cast, and it’s now been revealed that rising star Andrea Riseborough will be one of them.