Val McDermid is one of the few writers which successfully merge the reality of a UK setting with the thrill of the chase.
Her background as a newspaper reporter seems to enable her to write developing stories in a style that makes you feel you are there. Her characters are more human than those found in Patricia Cornwell's police thrillers, and the characters have more depth than the typical James Patterson. She avoids the new realism which seems to demand more explicit torture scenes in short chapters, relying instead on a more thoughtful exposition of the motives involved and a true sense of time in the plotting.
Her development of the personality of Tony Hill is well-paced, and manages to blend the abstract analytical facet of his work with his human frailties and self-blindness.
This book encouraged me to read her back-catalogue works; the schoolgirl mystery stories of Lindsay Duncan and the Warshawski-like Brannigan series which although lighter in tone show the love of detail on which this more mature work depends for its success.
I unreservedly recommend it as a more human approach than Cornwell and created with rather more thought and insight than Patterson.