Blood Rain: Michael Dibdin

After his last case, among the gentle hills and lush vineyards of Piedmont, Inspector Zen finally receives the order he has been dreading all his professional life: his next posting is to Sicily.
The gruesome discovery of an unidentified, decomposed corpse sealed in a railway wagon on a disused siding marks the beginning of Zen's most difficult and dangerous case. Set against the backdrop of the three thousand-year-old city of Catania, in the shadow of the smouldering volcano of Etna, Blood Rain reveals Aurelio Zen at his most desperate and driven.