With Lucas Hnath's lucid and absorbing A Doll's House, Part 2, the Broadway season goes out with a bang. It is not the same kind of bang, mind you, that ended Henrik Ibsen's 1879 social drama, A Doll's House, in which bourgeois Norwegian wife Nora Helmer walked out on her doting husband and young children with a decisive (and divisive) slam of the door. In Hnath's taut sequel, set 15 years later, the runaway bride-played by the great Laurie Metcalf, with magnificent grit and frustration-returns to confront the people she left behind: her husband, Torvald (a sympathetic Chris Cooper); her now-grown daughter, Emmy (Condola Rashad, poised and glinting); and the family servant, Anne Marie (the uncommonly sensible Jayne Houdyshell).