The topic of this thesis is the psychological and geographical profiling of serious crimes such as rape, homicide and arson. The thesis is divided into four parts. The first of them introduces the basic concepts and terminology with respect to the offender's personality. Attention is focused on personality disorders and on some sexual paraphilias that are the most important for forensics. The topics that relate to offender's behavior are discussed as well - motivation, modus operandi, offender's signature, and the crime scene. The second part is focused on rape, homicide and arson and the characteristics of offender's personality. The third part deals with psychological and geographical profiling. Various attitudes and theories are discusse...