A high-speed train “Milan—Rome” arrives at Termini station. Passengers disperse, the platform empties, but no one leaves the “luxury” carriage. Police agent Colomba Caselli, familiar to readers from the novel "Kill the Father," discovers bodies of people in the carriage—apparently strangled to death. A version of a terrorist attack suggests itself, one that the police leadership is ready to latch onto. But Colomba suspects the case has nothing to do with terrorists. To understand what happened, she will have to turn to an old friend, Dante Torre—the only person capable of seeing the truth beneath piles of lies. Together, they establish that the attack on the train is only an episode in a long chain of mysterious murders. Behind it all is a mysterious woman who leaves no trace. All that is known is her name—Gylthine, Angel of Death, killingly beautiful…