The topic of true and false intent has been more or less ignored within the field of legal psychology. This is remarkable considering the frequency and importance of situations calling for assessments of whether a person is lying or telling the truth about his or her intentions (e.g., when crossing a border). There were four aims to the present paper. The first was to outline a psycho-legal research program on true and false intentions. The second aim was to highlight some conceptual issues which might be relevant for planning and conducting research in this domain. The third aim was to offer some stepping stones which might assist researchers launching investigations on true and false intentions. The final aim was to briefly summarize the first round of empirical psycho-legal studies on true and false intentions.