In its bones, this is a police procedural of a pretty classic sort, albeit with an overlay of social awareness, But it's done with enough style and restraint to make it a very satisfying example of the genre, in an excellent French tradition that goes back to Quai des Orfèvres and the outstanding 2005 film Le Petit lieutenant, to name just those. It involves a group of cops from the Grenoble branch of France's Police judiciaire, the equivalent of the criminal-investigation side of the FBI (vs. The latter's national-security functions, which are handled elsewhere). The P. J. takes over from the local police or (in this case) the gendarmerie, in really tough and complex investigations, as it does in the real-life murder case that is re-enacted here. Operating in tandem with an investigating magistrate, it has, as is demonstrated here, awesome investigative powers.

Not that they are of much use in this frustrating case, where, as the chief investigator points out, any of a whole range of suspects could easily have been the murderer of an attractive, charismatic young woman as she returns home on foot from an evening with her pals, even though there's no convincing evidence against any of them. It's no spoiler to say that the case, which eats away at the investigators, remains unsolved -- we're told this before the film even starts. So there are no triumphs of police work, and all seeming breakthroughs lead nowhere, all of which gives the film unusual texture. The agents are smart, determined, well-trained, and sensitive, and the film is as much about how they deal (not always well) with the limitations they come up against as it is about the more explicit, and perhaps overemphasized, theme of male abuse of women.

Some of the usual tropes of the genre are present. There are tensions within a group of policemen (the one woman appears later, to welcome effect) of contrasting personalities, with arguments over procedure and over basic philosophies, and there's a digression into the marital difficulties of one of them, Marceau, played powerfully by the Belgian actor Bouli Lanners. All this is handled with uncommon deftness and understatement. Add to this the spectacular mountain scenery of the Grenoble area, and La nuit du 12 drew me in and held me.

Much of the film is carried on the shoulders of the strikingly youthful lead investigator, Capitaine Yohann Vivès, played very convincingly by relative newcomer Bastien Bouillon, for whom I hope this will be a breakthrough. Both the character and the actor himself are given tough assignments. In the actor's case, the screenplay calls for him to communicate via long silences, during which he is required to react through only the subtlest shifts of expression, something he does remarkably well. He's also very convincing in his handling of the smart, slangy dialogue that the excellent screenplay assigns to him. Not all the sharp wordplay can make it into the subtitles, but the laughter around me this evening made it seem like not that much is lost, either.

So: La Nuit du 12 may not be a great classic for the ages, but, for its thoughtfulness, its wit and sincerity, and some very fine acting by all concerned, it is a very satisfying entertainment.