The crime and arrest data are presented in five parts. The first section displays the Missouri Crime Clock. This clock provides an overview of the frequency of occurrence of Crime Index offenses committed in the State in relation to time. The Crime Index is the sum of the eight major offenses that indicate the occurrence of crime in the United States. The eight offenses that compose the total Crime Index are murder, forcible rape, robbery, aggravated assault, burglary, theft, motor vehicle theft, and arson. The second section provides data related to Crime Index offenses committed in the State of Missouri. Its purpose is to provide a comparison of the various types of Crime Index offenses so that their relative importance can be assessed. In addition, Crime Index activity is displayed by geographical regions of the State and also over time to observe trends. The third section presents data on arrest activity and clearance rates associated with Crime Index offenses, as well as arrest activity associated with other classes of criminal offenses. These data provide an appreciation of criminal enforcement activity being performed in the State of Missouri by class of crime. The fourth section provides a series of data and analysis related to each of the eight types of Crime Index offenses. Data are provided on crime activity, clearance rates, crime patterns, and arrest activity associated with each of these offenses. The last section provides summary data on Crime Index offenses and arrest activity for specific law enforcement jurisdictions in the State of Missouri. Violent offenses underwent a 6.5-percent increase over 1990, and property offenses increased 5 percent from 1990. Extensive tables and figures