When a group of Austrian cavers exploring in the Italian alps comes across human remains at the bottom of a deep shaft, everyone assumes the death was accidental. But then the body is stolen from the morgue and the Defence Ministry puts a news blackout on the case. And is the recent car bombing in Campione D'Italia, a tiny tax haven, somehow related? The search for the truth leads Zen back into the murky history of post-war Italy and obscure corners of modern-day society to uncover the truth about a crime that everyone had forgotten.