This is the eleventh 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 novel Falco becomes embroiled with the religious cults of his beloved Rome after he is approached by a young girl, who claims that someone is trying to kill her. The girl has been proposed as a Vestal Virgin, a highly sought after position, although most of the city believe that the voting is fixed and that another girl will win. Falco and Helena are having dinner a few days later with helea's parents, when Camillus Aelianus returns home shaken to the core at discovering a man's dead body in a Sacred Grove.
Falco has to put his detective's hat on once again, but somewhat reluctantly after all he has recently been given the singular honour of Procurator of the Sacred Geese and he is finding out that the ones with feathers on that strut about and make that stupid noise are not half as attractive as those that haven't and don't . . .