A good tale, well told. Well-developed characters are set in an intriguing plot, with a nice balance between procedural detail, descriptive material, and suspense.
Unfortunately the lack of proof-reading [at least in the US, Simon & Schuster edition] results in innumerable typographical errors, which were extremely distracting and spoilt the reading pleasure.
Had the publisher made any effort in this regard, I would have awarded 4 stars.
I hope that Mr. Porter will write more books of this ilk, and that he will take note of this deficiency. END