When social worker Penny Wade meets her new client, Dani Martin, she thinks her job is to help the sixteen-year-old cope with her mother's sudden death. But Dani raises some troubling questions about how Anita Martin died. The police call it an accidental death. After all, people die from anaphylaxis every day. Dani is convinced her mother was murdered. Where was her always-handy EpiPen? Who was with Anita when she ate a pastry contaminated with nuts? When a second murder victim turns up, Penny risks her life to uncover the disturbing truth about Dani's family, whose illicit connections reach from the back alleys of Boston's art world to the underworld of India's gem trade.