This book provides a timely criminological investigation into the rapidly growing sale of fake medicines online. Some estimates suggest that the fake medicine trade has now overtaken marijuana and prostitution as the world's largest market for criminal traffickers. This increase has been particularly apparent in the context of various evolutionary phases in information and communications technologies, and the Internet now acts as the main avenue through which this criminal market is expanding. Thus far – despite growing concern and media attention – this extensive, extremely profitable, and ultimately life-threatening online market is yet to be fully explored. Drawing on the authors' own criminological investigation of both the supply and demand sides in the United Kingdom, this study offers the first in-depth and empirically-grounded analysis of the online trade in illicit medicines. Founded on rigorous research, and bolstering a rich area for debate, this book will be of particular interest for scholars of criminology and technology studies.