The director of the Federal Bureau of Investigation presents a series of well known crime cases to illustrate various points he wishes to make. He takes up such angles on crime as the relation of environment to the criminal, professional men and criminals (Dillinger's doctor and his attorney, for instance), the women behind the crime, the criminal at your elbow, hero worship as an impetus to crime, the evils of the parole system, extortion and blackmail, etc. He has certain constructive suggestions, such as increased police force, education of the public, treatment of crime as a social problem, taking the matter out of politics. This is not an inside picture of the workings of the Federal Bureau or the G-men in operation, but should appeal to that market and to those interested in criminology.