Famous writer Phoebe Hall has been accused of plagerism. Her long-term boyfriend has left her for another woman. In an effort to get away and wait for the dust to settle Phoebe takes a job at Lyle college. Her friend Glenda Johns is the school dean. As a favor to her friend, she starts to investigate a secret society of girls called The Sixes. Phoebe knows well from first-hand experience the damage such a group can do as she herself was terrorized while at boarding school with Glenda.
When one of the students is found drowned in the river, Phoebe delves closer in to the mystery of the Sixes and someone starts trying to frighten her off with scary little presents left in her house. With the help of Hutch, a retired school security officer, they try to put together the pieces of Lily Mack’s death. When Phoebe finds Hutch dead, she herself is almost killed. When the police step in and tell her to back off her investigation, she continues until all the secrets are unraveled.