For me, this was a surprisingly light and fast read - started and finished almost in an evening.
The story begins in Tuscany with a rather complicated description of departmental politics - but don't let this put you off. Apparently, the 'art theft' department has to prove itself and defend it's methods against an interloper who is all politics and no substance. This opportunity is given in the form of a cryptic note, which opens up a number of unsolved cases - in themselves, open to question. The story develops as the members of the art theft department scrabble to unravel the obvious and the not so obvious.
The most enjoyable part of this book are the twists and double twists. At first, I was bothered that I couldn't really get to grips with the characters, many of whom seem to be little more than cardboard cutouts. However, being patient with this allowed me to really appreciate the denouement which, without giving too much away, hinges on something of a mind game. Definitely worth a read.