In an unnamed city which has certain resemblances to early-20th-century New York, many matters are regulated by the Agency, a large, somewhat Kafkaesque organization whose hierarchy runs, in descending order: Watchers, Detectives, Clerks, Under-Clerks. There's not much direct communication between the members of these four strata.
Charles Unwin is the clerk whose responsibility it is to formalize, index and file the case reports of Detective Travis Sivart, the city's most prominent detective. One day he is abruptly informed that he has been promoted to fill the shoes of Sivart, who has gone missing, and is given a copy of the eponymous Manual of Detection to guide him. Plucking up all his courage, he goes to see the watcher who has made this appointment, hoping to persuade him it has all been a mistake and to restore the status quo, but by the time he gets there the man has been murdered; and soon thereafter Unwin finds himself framed for that crime. He spends most of the rest of the book in quest of the elusive Sivart, discovering along the way that there were flaws in the solutions of several of Sivart's most celebrated cases, and that some of the supervillains with whom Sivart has vied are perhaps not what they've seemed.
In particular, Unwin learns that the standard edition of The Manual of Detection is missing a chapter, the one on oneiric detection -- detection through dreams. Thus, while much of the novel's action takes place in mundane reality (or, at least, the version of it which the author presents to us as reality), there's also much that goes on within dreams, and within dreams that are themselves within dreams, and so on -- to the extent that it can be hard on occasion for the reader (or at least this reader) to work out which layer of derived reality is the one currently involved. This is the aspect of Berry's novel that I liked.
In a way the novel's like an expanded account of a dream; while the phantasmagoric nature of the events sometimes captivated me, there were also quite a few occasions when it occurred to me that there's a very good reason why people are generally discouraged from telling others about their dreams. It also means that throughout the text there's the sense that nothing that goes on, are the people participating, are of any consequence; there's no passion in the writing, and cannot be, with the result that it's pretty hard to muster any passion for the reading, either. By the halfway mark I was finding proceedings tedious (I was also finding it hard to remember, each time I picked the book up, what had been happening when I'd broken of); by three-quarters of the way through I was, alas, beginning to keep count of the pages left to go.
This alienation from the events of the text is unfortunately bolstered by the book's other major influence (if I can use that term loosely): surrealism, most especially the surrealism of Rene Magritte -- just to make sure we catch this, the title page bears a Magritte-style hat! It crossed my mind at one point that this book might be an exercise along the lines of "the detective novel Magritte might have written"; while I dismissed the notion immediately, it nevertheless did capture something of the feel of the text. The trouble is that the great delight of Magritte's paintings is that they portray a world that by definition we can't enter -- they're windows onto a dreamlike place of beautiful, consciousness-enflaming fantastication. If you're asked to step through the window and into that world, much of its magic ebbs because of your presence -- especially if your presence is prolonged to fill 278 pages.
I'd been looking forward acutely to The Manual of Detection -- it sounded to be right up my street (and the book's excellent, imaginative design enhanced this expectation) -- and must confess to being very disappointed. I was impressed by much in it, not least the author's first-rate imagination, and I'll be looking out for further books by Berry; but this one just didn't do it for me.