Dit proefschrift werd (mede) mogelijk gemaakrt door financiering van het Horizon 2020 onderzoeks-en innovatieprogramma van de Europese Unie onder subsidieovereenkomst nummer 727145. 2020 research and innovation programme have financially supported my appointment at Utrecht University (under grant agreement number 727145).As a final note, I thank "infobox Criminal and Unexplained Capital" (in Dutch: infobox Crimineel en Onverklaarbaar Vermogen, iCOV, https://icov.nl) for contributing to my dissertation through funding and providing access to their anonymized data which provided the significant empirical insight into the behaviour of criminal networks.