"Tacky" is the nickname given by Boudreau, francophile cop, unhealthy individuals zonent in shady neighborhoods of Seattle. Sticky, this novel is certainly one of the most telling long hunt for a serial killer in the United States; one that, in the 80's, had targeted the "Green River killer." Here we follow in parallel and more than 8 years a cop and its prey sometimes wondering who the 2 is really the prey. I enjoyed this book because behind arch-hackneyed frame, it avoids many clichés: The killer is not only describes in his dementia but also in his everyday life that allows it to blend into a society "normality "flickering. His murders are not the subject of detailed descriptions and glaucous but most often appear only through their effect on his relationship with others. The cop is not an alcoholic to drift and although his privacy be chaotic, the author provides an exciting and believable psychological profile. Of course the local police and the FBI are shooting themselves in the feet and not all are very clean but the picture that emerges leaves appear above humanity (and weaknesses) of each. Do not spoil, writing is dense and stylish, cold and parsimonious humor ... it really holds up. The digressions are however numerous, especially in the first part and affect the flow of the story but the last half of the book is read in one with short and incisive chapters. In short: A long and successful investigation, sometimes erratic but involved until an ending that is cold in the back!