In Cold War-era Britain, compulsive reader Serena Frome is unexpectedly recruited by MI5. Her big chance comes with the launch of Operation Sweet Tooth, one designed to fight Communist propaganda by secretly supporting writers with the right ideals. Serena’s beauty and interest in books puts her in an ideal position to befriend rising author Tom Haley. From the first paragraph of Ian McEwan’s latest, we already know that the mission doesn’t end well, but it’s easy to be distracted by the earnest narration of actress Juliet Stevenson. Through her voice, Serena feels her way through perception, deception, and manipulation. Exposure is imminent, but who, by whom, and how? Just wait for the final reveal, one that will especially gratify fans of Atonement.