"Originally published in Italy in 2016 as L'Angelo" -- Verso title page.

When a high-speed train from Milan draws into the station in Rome with a carriage full of dead bodies, preliminary investigations are placed in the hands of Deputy Police Commissioner Colomba Caselli. And after the police receive a message claiming responsibility for the killings and announcing more murders to come, they turn their attention to a small group of Islamic extremists. But Dante Torre--the victim of a childhood abduction with extraordinary powers of observation--believes authorities are being misdirected. For him the Islamic link is a smokescreen concealing the actions of a killer who has been committing murders all over the world for years: a woman who calls herself Gilitine, after the mythological Lithuanian goddess of death. As a child during the final years of the Cold War, Gilitine was imprisoned in a concentration camp behind the Iron Curtain known as "The Box." Now, she is driven by revenge. After further carnage in Berlin, Gilitine's murderous plans escalate to macabre heights in Venice, where Dante and Colomba must stop her before the waters of the Venetian Lagoon turn blood red. And then comes an incredible surprise.