Although consultation has become an important vehicle for purveying psychological services to social systems, few well-defined conceptual or empirical guidelines sensitive to the multidimensional nature of complex social systems exist to structure intervention efforts. A case study of a consultative intervention with an internally conflicted police department is presented. The process of the intervention clearly illustrated the multidimensional factors sustaining the difficulties. A particular consultative intervention, the consultant-trainee model. was utilized and scemcd to have several features useful in such cases. A prc-post evaluation supported the effectiveness of the intervention and several recommendations for the conduct of effective, ecologically sensitive social system consultation were presented.problems. However, the guidelines illustrated by this case should be useful to consultants who try to work within the multidimensional networks sustaining organizations and their conflicts.