In this fourth novel of the Matt Scudder series, Scudder is hired to investigate the murder of a young woman that happened nine years ago. The police assumed that the Icepick Prowler, a serial killer, had murdered her, but they recently caught him, and he confessed to all the other murders, but swore he did not do this one. Although the murder showed the characteristics of the Icepick Prowler's work, Scudder notes enough differences to make him think that a copycat killer did it and is still loose. This leads us on Scudder's plodding, careful investigation through streets (and bars) of New York. It's a gritty picture, but the author gives us clues that help to identify the killer. Otherwise, it's a surprise. Block's writing is outstanding, and his descriptions of the dark streets and alleys of New York are priceless. This is a great book to keep your attention on a long flight.