A Abstract of the thesis "The Issue of an Offender's Personality in Criminology" Offender's personality is a summary of various aspects influencing one's behaviour in regards of a set offence. This paper focuses mainly on criminological and psychological aspects of people who commit violent crimes. It summarizes different typologies of offenders, schools of criminal causes, various aspects of personalities, and discusses prevention of criminality in the Czech Republic. In addition, it focuses greatly on stalking from theoretical as well as practical point of view through an extensive case study. The main foundation for this case study is a court case from early 2008, further anonymous due to request of the Municipal Court in Prague. Even th...