Considering the subject matter it would be very easy for this to be a pulp novel and John Rain to become "just another" character in the never-ending world of fiction.
Had John Rain have been created as completely immoral and sub-human I doubt this series would have lasted very long, but in Rain Eisler has created a likeable and morally conflicted character engaging enough to keep the pages turning.
This was the first John Rain novel I read and whilst they can be read as stand-alone novels the earlier books provide insights and history that shape and develop the character of Rain even more.
Having done that I re-read this and having already been suprised at how much I enjoyed it originally, I found it an altogether more satisfying read the second time round. The previous book (Choke Point) does trigger some important developments that alter Rain's perspective significantly and this book finds him dealing with these issues on the job.
I may be wrong here, but from what I remember from the other novels this is also the first book that isn't written entirely in the first person, which has allowed Eisler a little more scope for developing some of the other characters around Rain.
I've given this five stars because the action sequences are as well written as ever and Eisler's sense of humour comes through in some of the character exchanges, particularly those involving "country-boy" sniper Dox who lightens the mood of the series. Along with Mossad honey-trap specialist Delilah they add another dimension to the series without either character feeling contrived which again is down to Eisler's writing as these two end up forming part of Rain's development instead of simply being used to pad out the story.
If you enjoy spy novels, crime novels, thrillers, or just novels with well thought out and well developed characters and storylines, then this should be right up your street.
There is still a hefty storyline to get through (involving the CIA, mossad, international terrorism and the Japanese FBI: Keisatsucho) however and some of the violence is quite graphic. If either or both of these would put you off reading this book, then it probably isn't for you. If you aren't sure then give it a go and I think you will be pleasantly surprised.