For decades Kent Jones has been one of the most eloquent and perceptive film critics in the U.S.; with this devastating chamber drama... he also proves himself to be a keen observer of psychology and American social mores.

We usually expect that a film named after its protagonist will sooner or later reveal everything about that person, give us the whole woman; Diane, by contrast, comes in pieces

Diane is a sublime puzzle of a movie, resolving itself without completely yielding its secrets.

Poignant and sneaky good...