We examine the level of overlap between offenders’ criminal networks (i.e., those with whom they discuss criminal activities and exchange criminal knowledge and skills) and offenders’ core discussion networks (i.e., those with whom they discuss important personal matters). We formulate four hypotheses based on social capital and focus theory. Empirical data from 1,904 Dutch pretrial detainees reveal that one third of the criminal network members also function as core discussion partners and that half of the criminal network members know at least one core discussion partner. This implies that offenders do not completely separate their criminal network from their core discussion network. Multilevel analyses show that this network overlap is larger if criminal network members live close to the offender and/or if they share multiple social settings. Our findings have implications for policies regarding the prevention of recidivism and the reintegration of offenders into society.