If I see one more review that lambasts an M. Night Shyamalan film for not having a twist, I’m going to scream. It happens every time they’re released: a certain proportion of reviewers are apparently so unable to evaluate a film on its own that they reinterpret Shyamalan’s effort through a filter of expectation that, inevitably, does it no favours. This is by no means to say that Shyamalan is some maligned genius: Lady in the Water, for instance, was a mess. But while The Happening is by no means perfect, it is an idiosyncratic, interesting experiment that succeeds more than it fails. It’s unsettling at points, and scary twice; expect a twist, though, and you’ll be disappointed.

What you get, as many reviews have noted, is a B-movie disaster by way of Alfred Hitchcock. The film lives up to both halves of that comparison in multiple ways. For the first half, there’s the basic premise behind the happening itself — which, if you haven’t seen a trailer, is that people suddenly start committing mass suicide for no apparent reason. Given that the first tentative explanations are proposed just as the characters are approaching a small town called Hokum, I think it’s fairly clear that we’re not meant to take it entirely seriously (if I did, I would have to conclude that it’s based on an understanding of plant biology that is either much deeper than my own or much, much worse; but this is a film in which all science is Science, with a capital S). Moreover, both the acting and the dialogue are heavily stylised — but in a broad monster movie way, rather than the low-key, heavily naturalistic way of Shyamalan’s earlier films, with lots of heavily telegraphed reaction shots, and clunky observations. And the couple at the heart of the film (Mark Wahlberg and Zooey Deschanel) are almost unnaturally wholesome, in a way that recalls caricatures of ’50s America. Wahlberg’s character seems lost and bewildered, while Deschanel’s secret shame, endearingly, is that she went out for dessert with another man. Both frequently make big eyes at the screen, and each other.

But Shyamalan must know he’s set himself a near-impossible task in his choice of story, because at first glance it requires him to make inanimate objects scary. (It actually requires him to make an invisible force scary, a much easier sell because it can be made visible through its effect on people, but there’s still an initial hurdle to jump.) Which is where the second half of my earlier comparison comes in, because to a large extent he gets away with it. The Happening has a lot more laughs than you’d expect, almost all of which come from character interaction, or from moments when characters acknowledge that what’s happening is simply bizarre; and then something horrible will happen. Which is to say that although the film acknowledges, in various ways, its hokeyness, Shyamalan follows its implications through with conviction, often playing on the tension between terror and laughter. It helps that he’s admirably callous about killing off supporting characters (a lot of whom are very deftly drawn; I particularly liked the jittery private who’s seen most of his base kill themselves), and it helps that he excels at set-pieces and disturbing images. People walking off a building, as seen from the street; or a shot of a gun being successively picked up and then dropped by people shooting themselves in the head; or a car that starts accelerating towards something off-screen, such that you only get a second to realise that the driver’s lost it and is heading for a tree; or a mass hanging. Sometimes he shows you something traditionally gruesome, but more often he manages to make you think he’s going to show you something gruesome, and then pulls away at the last second.

Moreover, there’s much less of a sense of hubris about this film than there was about Shyamalan’s recent efforts. There’s no architect-figure cameo, for instance — indeed, unless I blinked and missed it, no cameo at all. There’s an ecological message, but it’s not thumped home, largely because the most portentious dialogue is placed in the mouths of characters whose grasp on reality may be a bit more fragile than the average; the film is pacy, and over quicker than you expect, if sometimes shamelessly contrived in its plotting; and in general, it feels like a film that sets out to please its audience, rather than its director. It may or may not succeed in that — reviews suggest that I’m in a minority, although the audience I saw it with seemed to get into the spirit of things — but for its distinctively personal approach, I’m bound to admire it. Perhaps I can pay The Happening no higher compliment than this: I can’t wait to see what Nick Lowe makes of it.