Griffin Dunne’s years-in-the-making documentary portrait of his aunt Joan Didion moves with the spirit of her uncannily lucid writing: the film simultaneously expands and zeroes in, covering a vast stretch of turbulent cultural history wit…

Griffin Dunne’s years-in-the-making documentary portrait of his aunt Joan Didion moves with the spirit of her uncannily lucid writing: the film simultaneously expands and zeroes in, covering a vast stretch of turbulent cultural history wit…