Annalee, devoted wife and mother of two, is missing. When a swatch of fabric from her nightgown is found snagged on a branch overhanging the river, her family fears the worst. Lianna, taking leave from college, blames herself - after all, her mother was a known sleepwalker and Lianna was supposed to monitor her mother while her father was away at a conference. As she delves into her mother's last weeks, Lianna uncovers family secrets that may even suggest murder. Plot twists and reveals keep the reader guessing up to the last chapter.