This is the latest from Iain “[M]” Banks, but already a year old. It’s a relatively simple romp through a multiverse where every action creates a fork between universes, and only a few elite, controlled by a shadowy organization called The Concern, are able to move among them. I wasn’t bored by the whole thing like Adam Roberts at Strange Horizons. I don’t mind that the basic multiverse concept has already been explored by (many) other writers. Even if a setting is already well-known, there can still be room in it to tell a good story.