In the fourth of Peter May's acclaimed China Thrillers, American pathologist Margaret Campbell finds herself back on home soil, only to be faced by a truck full of dead Chinese and an unavoidable confrontation with her past. <br>Beijing detective Li Yan, now based at the Chinese embassy in Washington, is dispatched to find out how his fellow countrymen suffocated in a sealed refrigeration unit in southern Texas - only to find himself face-to-face with the woman who walked out of China, and his life, to return to the U.S.<br>Tasked to work together again to find out who is behind the $100 million trade in illegal Chinese immigrants which led to the tragedy in Texas, they discover that the immigrants were unwitting carriers of a deadly cargo.<br>And still wrestling with the demons of their pasts, Li and Margaret find themselves racing against time to defuse a biological time-bomb that threatens to wipe out not only their future, but that of humankind.
