Denotation of the Polish word kryminalistyka (German: der Kriminalistik) now is different than in last years of 19th century, when Hans Gross published his Handbuch fur Untersuchungsrichter als System der Kriminalistik. An English word “criminalistics” it is not simply translation of German der Kriminalistik (Polish kryminalistyka). “Criminalistics” that means the sum of the “forensic sciences”. For Hans Gross der Kriminalistik included methodics of the work of the examining magistrate, practical criminology, and competence for cooperation with experts in forensic sciences. Forensic sciences was out of the der Kriminalistik in Gross meaning. So, from practical point of view, der Kriminalistik it is “criminal investigation”. In Poland and in other countries of the East Europe der Kriminalistik it is a separate science. It include “criminal investigation” as well as forensic sciences. In school of laws, in East Europe there are departments or institutes o f der Kriminalistik. Is the Kriminalistik really a separate science? What is the subject of the science? Or, maybe it is a complex of separate sciences with the different subjects, different methods but with the same goal? A complex of sciences as for example “social sciences” or “natural sciences”? Who is specialist in “criminalistics” (der Kriminalistik)7. Is it possible to be specialist in kryminalistyka and not to be a specialist in one of the forensic sciences? According to the author, in educational level, kryminalistyka it is introduction to forensic sciences. In the scientifical level it is the complex of separate forensic sciences.