This is the eighth novel in the mystery series featuring Marcus Didius Falco, an informer and sleuth in Rome at the time of Vespasian. A series of books that have become hugely popular, so much so that the author is now at the forefront of historical mystery writers. It was probably a stroke of genius on her part to have novels that are extremely well researched and contain all the elements that would be and should be found in the Roman world of circa AD70, but to have a lead character who has the vocabulary of a present day New York cop. In this the eighth novel Falco and Helena Justina almost seem like long lost relations to the reader.
A dinner for the Olive Oil Producers of Baetica, goes badly wrong when one man is killed and another - Anacrites, the Emperor's spy - is seriously wounded and left for dead. Because Anacrites is to be laid up for some time, Falco is brought back into the Emperor's fold as imperial sleuth. Falco is plunged head long into the world of olive oil production and heads out to Baetica.
It soon becomes apparent to Falco that the killing was no simple murder. Falco and Helena are staying in Baetica, using the excuse of inspecting the villa and olive crops of Helena Justina's father, Camillus Verus. This case is not the only thing on Falco's mind either, impending fatherhood is creeping up on our Roman sleuth.