Book excerpt: Theories of criminality and theories of victimization have traditionally been discussed as though they bore no relationship to one another. Yet, a complete explanation for crime must examine both the decision to engage in crime by an offender and the everyday actions of ordinary citizens that increase vulnerability to criminals. The integration of these approaches yields testable models that have greater predictive power than could be obtained by looking only at models of offenders or models of victim behavior. A more general perspective that accounts for both the decision to engage in crime and the selection of particular crime targets is developed and tested.