LONDON - EARLY MORNING . . . A body is found in a padlocked suitcase. Investigator Emma Makepeace knows it's murder. And it's personal. She quickly establishes that the dead man had been shadowing two oligarchs suspected of procuring illegal weapons in the UK. And it seems likely that an insider working deep within the British government is helping them. To find out who the traitor is, Emma goes deep undercover on a superyacht owned by one of the oligarchs. But the glamorous veneer of the rich hides dark secrets. Out at sea, Emma is both hunter and prey, and no one can protect her. Never has the turquoise sea and golden sands of the Rivera seemed so dangerous. As the hunt intensifies, Emma knows that she is in mortal danger. And that she needs to find the traitor before they find her . . .