The Devotion of Suspect X by Keigo Higashino
Monday, March 7, 2011 at 12:32PM 
Published by Minotaur on February 1, 2011
The Devotion of Suspect X is a different kind of crime novel. It isn't a whodunit: we learn in the opening pages that Yasuko kills her ex-husband, Togashi. Nor is the manner or motive of the killing a mystery: Togashi's aggressive behavior toward Yasuko and her daughter, and Yasuko's strangulation of Togashi with her daughter's assistance, are vividly described. For much of the novel, The Devotion of Suspect X seems like a police procedural combined with a detective story. The role of private detective is played by a physicist, Yukawa, who happens to be a good friend of the investigating police officer, Kusanagi. Yukawa also happens to be an old classmate of Yasuko's neighbor, a mathematician named Ishigami, who assisted Yasuko in the aftermath of the killing. Initially, the mystery surrounds the body that turns up days later -- with a pulped face and charred fingertips -- and whether Ishigami's scheme to keep the police from proving Yasuko's complicity will be successful. Yet about two-thirds of the way through the novel, the plot takes a sharp turn, and a new mystery emerges: Why is Suspect X doing something so completely unexpected?
I enjoyed The Devotion of Suspect X. Keigo Higashino's writing style (or perhaps the translator's) is straightforward; the prose doesn't soar but neither does it distract. The novel is tightly constructed; there's nothing in it that doesn't need to be there. Yasuko is a remarkably bland character (given that she's a killer) but the Buddha-like Ishigami and his friend Yukawa are interesting and their battle of wits brings the story to life. Ishigami's interaction with Kusanagi (another bland character) is less interesting but it serves to advance the plot.
The Devotion of Suspect X isn't a spectacular work of literature but it tells a good story. The plot unfolds rapidly and surprisingly. There is, ultimately, a mystery to unravel, and its solution completely floored me -- yet the author played fair: all the clues were there. The last couple of pages are a bit disappointing in that one of the characters behaves too predictably (probably the result of the author's desire to keep readers happy), but that gripe didn't overcome my generally positive feelings about the book.
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