It's just over an hour long and even so we have the trademark Kubrick opening, where he takes his own sweet time in letting us know what the film is about but somehow draws us in all the same. Look: it's an hour long, and it's a slight, hour-long kind of story. Don't expect anything more. I think there's also rather clearly a moment when Kubrick realised that he didn't know how he was going to end it all - to be honest, I have a sneaking suspicion that a similar thing happened on "2001", "Eyes Wide Shut" and even "Dr. Strangelove". In each of these cases it was the prompt for a daring and unconventional conclusion. I wish I could say that was the case here.
This doesn't prevent it from being involving while it lasts. Kubrick once again demonstrates the he could point a camera at anything at all and make it interesting - the images are amazing, yet entirely functional. If you have ever loved any black-and-white camera work you'll love this. It's also a masterpiece of violence-without-violence, if you know what I mean. It deserves to be more well-known than it is.