The report is based on information collected during discussions or interviews with agency representatives and other participants in the various multiagency crime- prevention groups and projects that authors have investigated during the research. The study found that relations between particular agencies involved in multiagency crime prevention are complicated; seldom static; and influenced by a variety of institutional, individual, and local/historical factors. These relations and the factors that shape them can also vary vertically; a spirit of cooperation among representatives on a strategic-level, multiagency, crime-prevention group might coexist with acrimonious relations at line-worker levels. The role played by the crime-prevention coordinator or by the chair of the relevant multiagency group is crucial in generating productive interagency relations. Other topics discussed are the composition and functioning of multiagency crime- prevention groups, forms of agency participation, and communication within agencies. A listing of areas or multiagency crime-prevention projects visited, 13 references, and a listing of the 52 publications in the Police Research Group Crime Prevention Unit Series