Probably the perfect example of John Sandfords "Prey" series, I have to confess to buying this in desperation to kill time on a long-haul flight, and getting suckered in to buying pretty much everything else hes ever written.
Its not so much that there is anything here that hasn't been done before - more that just about every aspect is polished, credible and attractive. The plot, centring on an apparently simple professional hit slowly starting to unravel, is taught and well laid out, whilst the dialogue has Sandford's familiar wisecracks, which, unlike some other authors, don't sound too forced or scripted.
Perhaps the best thing though is our central characters. Lucas Davenport, Deputy Chief of Police, is well known to us as someone brutal, unforgiving, and seriously sexist - yet somehow you can't help admiring the guy, and secretly hoping you'd have the courage to act the same way in his shoes. Of his quarry, an attractive young hit-woman working for the St. Louis mafia manages to be both clinically efficient and symapathetic, while her employer, a high powered Twin Cities lawyer, has us admiring her smarts and daring, even as we acknowledge her total lack or moral restraint.
If you haven't discovered the "Prey" novels, this one is a wonderful place to start. If you have and have yet to reach "Certain Prey", then I think you will find this the best of an exceptional bunch.