New releases

★ ★ Portrait of Wally A documentary about the restitution of an Egon Schiele painting that had been stolen by the Nazis and ended up in the possession of a prominent Austrian collector. The film has an interesting story to tell but takes too long to do so. Worse, it’s lacking in nuance and not lacking in self-righteousness. In English and German, with subtitles. (90 min., unrated) (Mark Feeney)