This killer is murdering members of a dubious religious sect, the New Pantheon, and leaving a mysterious figure eight drawn on their corpses. Meanwhile, Sebastian Chrest-Jones, a noted professor of human migrations, clandestinely writing a novel about the Byzantine princess-historian Anna Comnena, disappears on a quest to learn more about an ancestor who roamed across Europe to Byzantium during the First Crusade. Kristeva's recurring characters, detective Northrop Rilsky and the French journalist Stephanie Delacour, step in and desperately try to piece together the two-part mystery in the midst of their unexpected love affair.".