Twenty years ago, a mysterious group called the Butteri committed a series of bizarre crimes evoking the lost race of the Etruscans, and leaving in their wake a several bodies, a cryptic message, and a kidnapped child. Now, the leaders of the G8 are descending on Rome for a summit at the Quirinale Palace. But when a politician is found ritually murdered, seemingly by a strange young man dressed as the Etruscan blue demon, detective Nic Costa suspects that the old case was never really solved. The Butteri have returned - and are planning to unleash a devastating sequence of attacks on the city. Officially sidelined from the investigation but encouraged by the wily old Italian President, Dario Sordi, Costa and his team start to dig deeper into the past. There are still too many questions left unanswered - and much more to the history of the Butteri than anyone wants to admit.