The methods for identification of potentially aggressive persons based on observation of behavior and appearance were described. The results of studies on the signals from the facial expressions and other relationships between human behavior and hostile intent were presented. The practical use of tools for the detection of deception and hostile intent was described, based among others on the Paul Ekman’s theory of basic emotions. The rules for creating the sketch of a suspect were described, it was also raised the issue of profiling offenders based on behavioral traces under analysis
