Maria Callas, the world's greatest opera singer, lives the last days of her life in 1970s Paris, as she confronts her identity and life.Maria Callas, the world's greatest opera singer, lives the last days of her life in 1970s Paris, as she confronts her identity and life.Maria Callas, the world's greatest opera singer, lives the last days of her life in 1970s Paris, as she confronts her identity and life.