Alone, trapped in the darkness and with no way out, Bart Campbell knows that his chances of being found alive are slim. Drugged and kidnapped from his Edinburgh home, the realisation soon dawns that he's been locked inside a shipping container. But what Bart doesn't know is that he's now heading for France where is unspeakable fate is already sealed... DCI Ava Turner and DI Luc Callanach are working on separate cases. But they soon collide as it becomes clear that the victims being shipped to France are being traded for women trafficked into Scotland.