How can the positive potential of family and social networks be harnessed in the rehabilitation of a terrorist offender when such connections are absent? This is one of the key questions for practitioners who seek to involve family in rehabilitation programmes. RAN P&P explored the challenges in using family and social networks around (violent) extremist and terrorist (VE/T) offenders as a resource for rehabilitation 1 . The absence of family and social network, by coincidence or by choice, is one of the hardest challenges for practitioners, as it allows extremist groups to fill the gap in the offender’s life. Other challenges include a vulnerable family system, the negative role of the media and difficulties in cooperation between prison, probation and family support services where the latter exists. Although still in their infancy, different Member States have developed ways to work around these challenges, for example by using mentors and partner organisations to help rebuild a social network, or by extensive family therapy to deal with broken family bonds. This ex-post paper highlights the key challenges and responses. It targets prison, probation and family support professionals who want to develop or enhance their strategies and methods.