After her career implodes, twenty-nine-year-old Hazel Turner retreats to Whispering Willows, her childhood home in the Pennsylvania suburbs, and returns to her teenage lifeguard job to stay afloat. But her plans to spend the summer piecing her life back together are thwarted when she stumbles upon two mysterious deaths in the deep end. Hazel saved the first victim, Patrick Mason, from drowning when he was a child. The second victim-whose skeletal remains are clenched in Patrick's death grip-brings back even more traumatic memories. The remains are identified as belonging to the missing teenager from the last cold case her police officer dad worked on before his death. Hazel knows that she should leave the investigation to the professionals. After all, she has edited enough bestsellers to know how the story goes. But with the swim club closed until further notice and the police stumped, she lets her penchant for mysteries kick into full gear. With the help of her retired detective godmother, the elderly neighborhood know-it-alls, and her internet sleuth stepsister, Hazel swan dives into the hunt for the killer. But when you disturb the waters, you never quite know what secrets will float to the surface.