A seductive psychological thriller about a woman facing the dark truths at the heart of her family Jeanne Cross's contented suburban life gets a jolt of energy from the arrival of Ali Mather, the stunning new music teacher at the local high school. With a magnetic personality and looks to match, Ali draws attention from all quarters, including Jeanne's husband and son. Nonetheless, Jeanne and Ali develop a deep friendship based on their mutual vulnerabilities and long-held secrets that Ali has been recording in her diary. The diary also holds a key to something darker: Ali's suspicion that someone has been entering her house when she is not at home. Soon their friendship will be shattered by violence--and Jeanne will find herself facing impossible choices in order to protect the people she loves.