ISBN-13: 9781999896065 / Angielski
Things in the town of Upperdown are not as they seem. The Professor struggles with his devotion to proving the Riemann Hypothesis and he walks the streets seeking a solution whilst battling his own deeper preoccupations. The appearance of a stranger in town, the Piano Man, leads to the resolution of the long-term rat infestation but when the town's children start to go missing it is clear something darker has been set in motion.