In 1992, Sarah Lingate is found dead below the cliffs of Capri, leaving behind her three-year-old daughter, Helen. Despite suspicions that the old-money Lingates are involved, Sarahs death is ruled an accident. And every year, the family returns to prove its true. But on the thirtieth anniversary of Sarahs death, the Lingates arrive at the villa to find a surprise waiting for themthe necklace Sarah was wearing the night she died. Haunted by the specter of that night, the legendary Lingate family unity is pushed to a breaking point, and Helen seizes the opportunity. Enlisting the help of Lorna Moreno, a family assistant, the two plot their escape from Helens paranoid, insular family. But when Lorna disappears and the investigation into Sarahs death is reopened, Helen has to confront the fact that everyone who was on Capri thirty years ago remains a suspecther controlling father, Richard; her rarely lucid aunt, Naomi; her distant uncle, Marcus; and their circle of friends,