One of the key principles of contemporary criminal law is the principle that criminal law is the “law of actus reus” (“deed of crime”). The main thesis of the paper is a statement that there is no reason to change that. As various forms of special crime prevention and their significance have been recently expanding, both in theory and practice, “the perpetrator’s criminal law” becomes of essential importance too. The fact that criminal law has always been the law dealing with actus reus (a deed of crime) is connected with the historical concept of repayment for damages. The penal suffering, or punishment inflicted, may be a re-payment for the deed of crime, but not for the identification of the perpetrator or placing the perpetrator ...