A city on the brink. A mother on the edge. A nightmare that only DI Helen Grace can end. Sometimes, the darkest secrets hide in plain sight... Naomi's mother is desperate for help - and Detective Inspector Helen Grace is her only hope to find her daughter. But with the police under fire as a gang war grips the city, Helen will have to defy direct orders to search for Naomi. Soon, Helen's secret investigation uncovers more people disappearing from the city streets, leaving behind a disturbing trail of questions in their wake. The clock is ticking - and the only person looking for Naomi is about to meet her match...