In this presentation we explain the idea of working with a subject centric view in knowledge management projects for Police and in the domain of Forensic Data Analysis. Making important facts more subject centric means that an analyst makes explicit representations of main subjects. These knowledge workers” know a lot about relevant indicators of behavior, they make a lot of assertions and assertions about assertions, all of which can be captured in a Knowledge map. The necessary contextualization (for example, who made which assertion) is easily represented in the knowledge map. And these assertions, facts, insights, first observations around items, mails, persons are going to be connected. This work has been presented at the Topic Maps Conference in Oslo in 2008.