Bullet Train by Kotaro Isaka
Friday, August 6, 2021 at 6:52AM 
First published in Japan in 2010; published in translation by Overlook Press on August 3, 2021
Kotaro Isaka brings a playful sensibility to crime fiction. Bullet Train follows a number of murderous characters through a complex plot, but Isaka balances the grimness of crime with the amusing oddities of human behavior.
As the title suggests, the story takes place on a train. Two passengers, Lemon and Tangerine, were hired to recover the kidnapped son of crime boss Yoshio Minegishi. Their second and third priorities were to recover the ransom money and to kill the kidnappers. They board the train with the son, having accomplished all three objectives. Unfortunately for them, little time passes before the son dies of an unknown cause. To compound their trouble, a fellow named Nanao has been hired to steal the suitcase full of ransom money. He snatches the bag, but his lifetime of bad luck makes it impossible to disembark with the bag before someone else takes it.
The novel’s other key element involves an eleven-year-old boy named Satoshi “The Prince” Oji. A personification of evil, the Prince has mastered the art of manipulating adults and other kids to do his bidding. Killing and torture are not an issue for the Prince, although he typically forces others to do his killing for him. Yuichi Kimura boards the train to kill the Prince because Kimura believes that the Prince is responsible for his six-year-old son’s fall from a building and the son’s ensuing coma. Kimura quickly becomes the Prince’s captive.
The train is largely empty as it journeys from stop to stop. Most of the passengers are killers. They are familiar with each other by reputation, including two late arrivals who had retired from the game before circumstances compel them to prove that their senior status hasn’t slowed their wits or determination.
The rising body count assures that the plot moves as quickly as the train. While the plot is fun, the novel’s characters account for much of the reading pleasure. Nanao is certain that he travels under a cloud of bad luck. Kimura has been trying to recover from alcoholism since his son’s fall and blames himself for his son’s fate, in part because Kimura’s father regards him as worthless. Lemon is obsessed with Thomas the Tank Engine while Tangerine is a serious reader of fiction. The Prince asks nearly everyone he meets why it is wrong to commit murder and is never satisfied with their answers. Only the grandfather who appears near the novel’s end delivers a thoughtful answer to the question.
Who killed Minegishi’s son? Who hired Nanao to steal the bag of money and why? Can any of the adults outsmart the eleven-year-old Prince? Bullet Train eventually provides satisfactory answers to all those questions. Mystery and crime novel fans should enjoy the clever plot, but the quirky characters make Bullet Train stand apart from the self-impressed heros and cartoon villains who populate crime novels that readers in the West usually encounter.
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