The night he and his wife, Paola, attend, Flavia gives a stunning performance to a standing ovation. Back in her dressing room, she finds bouquets of yellow roses--too many roses. Every surface of the room is covered with them. An anonymous fan has been showering Flavia with these beautiful gifts in London, St. Petersburg, Amsterdam, and now, Venice, but she no longer feels flattered. A few nights later, invited by Brunetti to dine at his in-laws' palazzo, Flavia confesses her alarm at these excessive displays of adoration. Brunetti promises to look into it. And when a talented young Venetian singer who has caught Flavia's attention is savagely attacked, Brunetti begins to think that Flavia's fears are justified in ways neither of them imagined. He must enter in the psyche of an obsessive fan before Flavia, or anyone else, comes to harm.