In the Essex marshlands, twelve women are found abandoned in the back of a truck. Armed with knives but with nothing to say, except Grace. She will only speak to DI Stanley Low. Flown in to assist and aid his ex-colleague, and sometime lover, Met detective Ramila Mistry, Low finds himself confronting a global trafficking ring. They must hurry. Another truck is being prepared. Another twelve, vulnerable women are being groomed. Low can only find them by uncovering the ugliest of truths.