Published originally in 1961, this is a book that is reminiscent of its time (there's a technological twist and a highbrow cast of potential villains). It has stood up well, though, and makes for a substantial and satisfying read (like many Japanese novels, if you took out the details of the meals eaten by the main character it would be 30 pages slimmer!). There are no great surprises and no heroics - just absorbingly dogged police work by an otherwise domesticated soul leading to a mildly moralised conclusion. A treat for Japanophiles.