The patients in forensic psychiatric care (FPC) are affected by their illness and the care they receive, but their families are also affected. The family-systems nursing theory has the mutual influence of the family as constituting a core starting point for the health of both the individual and the family and focuses on helping families cope with their situation. The aim of the study was to describe healthcare professionals' experiences of their family-oriented work within FPC. The findings are presented in three themes: A longed-for reciprocity within and with the family, Maintaining a problem-oriented and individual-based tradition, and Caring built on a foundation of distrust. Family-oriented work among healthcare professionals in FPC can only be realized through a pervasive shift in perspective from a predominantly problem-oriented patient focus towards a focus on interactional interplay and patterns. This is based on the belief that there are potential resources for patients and families to change in a healthy way. An educational intervention is suggested as a core starting point for developing a family-oriented practice for healthcare professionals in forensic psychiatric settings.