In Jack Hill’s gleefully deranged Spider Baby, the last of the Merrye bloodline rot in a crumbling house on the edge of sanity. Watched over by a loyal caretaker (a mournful Lon Chaney Jr.), the three siblings suffer from a rare disease that turns growing up into a descent back into savagery. When distant relatives come sniffing for inheritance, they find murder, madness, and a dinner party from hell. Part Southern Gothic, part black comedy, all cult chaos.