During the research process, researcher used observation, interviews, and several psychological tests. There is one participant in this study, namely Mahmud, an prisoner of a homicide and involved in an abductions case. The researcher used a case study method with a qualitative approach. The researcher will also identify several causes that make up a person experiencing an antisocial personality disorder. This study aims to determine the personality dynamics possessed by prisoner who experienced antisocial personality disorders. Antosocial personality disorder experienced by someone caused them to take deviant actions and violate the norms and values of their surrounding, so that many of them are prisoners who are in custody.