The goal of this article is to investigate the key research questions in the study of the connection between drugs and crime as well as the pertinent research literature as it relates to those questions. It is stated that the link between crime and drugs should be explored for each form of crime and each type of drug. Drugs are a major factor in a large number of crimes, and many criminals have a history of using drugs. Although the connection between drugs and crime is frequently not as obvious as it should be, this article aims to improve awareness of these and related topics that have been clouded by misunderstanding and a lack of agreement among specialists.