United States, Assassinations, Crime 

What Doesn't Kill YouIris JohansenIn this breathtaking thriller, number-one bestselling author Iris Johansen showcases one of her most fascinating characters―pitted against one of the most ruthless killers…Abandoned on the streets of Hong Kong, Catherine Ling was schooled in the art of survival by the mysterious Hu Chang, a master assassin and poisoner. Now recruited by the CIA, Catherine finds herself caught between worlds when her mentor develops a formula that is extremely fatal, virtually untraceable―and highly coveted. On the hunt for this prize are a rogue operative, a band of criminals, and a man so evil he kills without remorse. Catherine will do anything to protect those she loves: Hu Chang and her son Luke. But she will have to use every deadly weapon, every double cross, every lethal lesson she ever learned―to prove that what doesn't kill you makes you stronger… - from Amzon