عنوان مقاله [English]
Familiarity with the patterns of a science or specialty provides the necessary ground for the membership of researchers in that field in scientific societies and makes it possible to use these patterns in specialized practices. Accordingly, people who are familiar with the principles and foundations of that science and have applied them, will rarely have disagreements and differences in actions in related topics. Therefore, people whose research is based on common patterns must follow the same scientific rules and standards. This commitment and consensus is a precondition and necessity for the development and continuation of any investigation in its related field and includes all investigations, especially criminal and crime detection investigations. In general, it can be acknowledged that active people in any profession need a roadmap to guide them in the right direction. The field of crime detection, as a police science and one of the branches of study of criminal sciences, certainly has principles and rules on which it is based, but it certainly did not have an organized style from the beginning, and unfortunately in this field compared to other sciences and despite the diversity of effective technical processes in it, researchers face a lack of theoretical principles and theories. Now, after many years, crime detection has recently had a roadmap, which without a doubt, by observing and implementing its principles, the scientific discovery of crime will be done in a structured and court-friendly manner. The present study seeks to enumerate and explain these principles and rules.