Adapted by Larry Gross from two stories by Andre Dubus (We Don’t Live Here Anymore and Adultery), this well-acted drama about two tightly interconnected married couples (Mark Ruffalo and Laura Dern, Peter Krause and coproducer Naomi Watts) in a small college town in Washington State is especially acute about the complex dynamics whereby a lousy spouse can be a good parent and vice versa. John Curran directed; the very capable Maryse Alberti handled the cinematography. R, 104 min. (JR)