Structural analysis of illicit markets suggests that criminal enterprise is to some degree linked with legitimate enterprise, and that networks generally comprise groups and clusters of individuals with varying subgroup structural characteristics. The results of the current study indicate that kinship and formal organization networks are highly cohesive and have low fragmentation probabilities. Therefore, the results show that blood, both through kinship ties or the metaphoric blood that ties formal criminal organizations is thicker than the ties that bind co-offending groups. Policy implications for policing techniques are also discused. (Publisher Abstract)