The constantly changing terms of investigation of crimes, especially in the period of realization by the state of reforms in the field of law-enforcement activity, dictate a necessity systematic to provide an investigator the modern research and practice manuals prepared on the basis of complex analysis of уголовно-процессуальных and criminalistics aspects of inquisitional activity taking into account requirements today's day. Just the same aims were qualificatory at preparation of the offered Настольной book of investigator, that is intended for providing of everyday assistance to the investigator in the effective decision of standing before him tasks. In this book the results of modern researches found a reflection in the areas of criminalistics and experience of in-plant training of inquisitional workers of different departments accumulated by an authorial collective countries.