Template dysfunctional parents that they are, it takes a tragedy to bring the Weston family together: daughters Barbara (Roberts), Ivy (Nicholson) and Karen (Lewis) and extended family members sister Mattie (Margo Martindale), nephew Little Charles (Cumberbatch, here for his buzz and quite miscast), and brother - in - law Charlie (Cooper) arrive to mourn the departed and tend to a severely addled matriarch.