Matthew Farrer once again brings his dazzling talent to bear on the Shira Calpurnia series. The fast-paced, intelligent action takes place in the great Imperial fortress system of Hydraphur, where Adeptus Arbites officer Shira Calpurnia enforces the law. Now she is investigating the murder of a blind astropath – psychic humans who use their gifts to communicate across the vast reaches of the galaxy – and she fears that the killer will strike again.