This is the first novel in the sequence of four containing Kathy Mallory. There are a number of features which make this book special:
i) it contains a detective story with a plot of great complexity and subtlety
ii) it is an intense thriller which grabs you by the throuht on the first page and only begrudgiongly lets go at the end.
iii) characters of great depth, in particular Detective Mallory.
iv) this all takes place against a very vivid backdrop, thereby punching a very strong message, about the nature of the human condition.
In summary this book contains the three fundamental requirements of a crime story: plot, characters and social comment. Therefore you should buy it.