The textbook captures the current state of criminological knowledge in the theory of criminology and forensic techniques. The textbook is intended for a wide range of readers - students faculties of law, Police Academy of the Czech Republic, University of Finance and Administration, University of chemical-technological schools, but also police officers, investigators, public prosecutors, judges, lawyers. Security staff can also learn from it agency. The textbook can also be a suitable tool for the study of criminology within educational process of others, especially technical universities, at which already in the past, but especially nowadays, a number of complex scientific research tasks of a forensic-forensic focus are being successfully solved; just wherever it is they investigate criminalistic traces and the process of criminalistic identification and proof is underway criminal or other adverse events.