Drugs like fentanyl, K2, and Spice—and those with arcane acronyms like 25i-NBOMe— were all originally conceived in legitimate laboratories for proper scientific and medicinal purposes. Their formulas were then hijacked and manufactured by rogue chemists, largely in China, who change their molecular structures to stay ahead of the law, making the drugs’ effects impossible to predict. Westhoff has infiltrated this shadowy world. He tracks down the little-known scientists who invented these drugs and inadvertently killed thousands, as well as a mysterious drug baron who turned the law upside down in his home country of New Zealand. Westhoff visits the shady factories in China from which these drugs emanate, providing startling and original reporting on how China’s vast chemical industry operates, and how the Chinese government subsidizes it. Poignantly, he chronicles the lives of addicted users and dealers, families of victims, law enforcement officers, and underground drug awareness organizers in the U.S. and Europe. Together they represent the shocking and riveting full anatomy of a calamity we are just beginning to understand. From its depths, as Westhoff relates, are emerging new strategies that may provide essential long-term solutions to the drug crisis that has affected so many.