Theories, methods, politics and problems; methods of criminological research - types of data, social surveys, experiments, observation, informal interviews, data and method, the theoretical connection; measuring and explaining crime - measuring the extent of crime, explaining crime - quantative research; studying the criminal justice system - "objects" as subjects, politics of criminological inquiry, gaining access - research in prisons, collecting data - researching the police, publishing results - plea-bargaining in court, getting research used - the short, sharp shock.