The article presents topics related to the 3D visualisation of the event, the reconstruction of the event on the basis of bloodstain pattern analysis and the verification of versions presented by personal sources of evidence. The text shows whether in Polish investigative and judicial prac-tice, these three issues occur together or separately and what is the relationship between them. The author presents the result of the work based on an extensive library search, an analysis of court records from two district courts and based on his long practice. The discussion covers essential issues related to the practical aspects of combining these fields to create comprehensive documents to streamline motions for litigants. The conclusions of the article allow for a better understanding of the current state of affairs and the development of better solutions for the legal system for the future.