Adrift in mist-shrouded San Francisco mornings and alcohol fogged nights, homicide detective Kate Martinelli can't escape the void left by her departed lover, who has gone off to rethink their relationship. But when twelve-year-old Jules Cameron comes to Kate for a professional consultation, Kate's not sure she is that desperate for distraction. Jules is worried aboud her friend Dio, a homeless boy she met in a park. Dio has disappeared without a word of farewell, and Jules wants Kate to find him. Reluctant as she is, Kate can't say no—and soon finds herself forming a frienship with the bright, quirky girl. But the search for Dio will prove much more than both bargained for—and it's only the beginning. When Jules disappears while taking a trip with Kate, a desperate search begins... and Kate knows all to well the odds of finding the child alive.