A noir of the mind, not so much stylistically (some trademarks of the genre are absent here.) Crawford made some of her best films after getting booted from MGM, including this, M. Pierce, Johnny Guitar, etc, proving they made a grave blunder in letting her go. This movie succeeds on strong casting, including Heflin, who maybe never had better roles than this and Patterns. Joan prob deserved Oscar that year. 4 stars
In addition to the iconic images, Possessed is a marvel of intelligence in composition. Noir is often about the art of making an entrance. Bernhanrdt quite cleverly doesn't repeat himself in this regard. You never know when someone is watching, or whose perspective will be shown next. It's gleefully loopy, in retrospect, but quite a punch to the gut at first. The purely psychological explanation should feel "off".