In March 2003, M Squadron was sent 1,000 kilometres behind enemy lines on a true mission impossible, to take the surrender of the 100,000-strong Iraqi Army 5th Corps. From the very start their tasking earned the nickname 'Operation No Return'. Caught in a ferocious ambush M Squadron launched a desperate bid to escape; the elite operators destroyed sensitive kit and prepared for death or capture as the Iraqis closed their deadly trap.
When a woman's body is found in a North London flat clutching a bloodstained sliver of X-ray, DI Thorne discovers that the victim's mother had herself been murdered fifteen years before by the infamous serial killer Raymond Garvey. When more bodies and more fragments of X-ray are discovered, a horrifying picture emerges: a killer is targeting the children of Garvey's victims...