In an Ian McEwan story nothing is quite as it seems, and many of the characters have a perfectly amoral willingness to break society's rules. That is the case here. "The Cement Garden" is not a pleasant film, nor is their any reassurance at the end - no promise that all will eventually be well. It's more of a seduction, like the events of the plot. It leads us into a world where some secrets are hidden and others indulged, and there is no restraint on its dark impulses.