This chapter examines the role of adolescent violence in the home (AVITH) in the life-course trajectories of intimate partner violence (IPV) offenders, highlighting its potential importance as a predictor of subsequent IPV and dating violence. Utilising social learning theory, attachment theory, and feminist theory, the chapter explores the mechanisms underlying the continuity of domestic and family violence (DFV) across life stages. Social learning theory suggests behaviours learnt during adolescence persist into adulthood when they are reinforced by our family members and peer networks, as well as the responses of formal systems, including child protection and criminal justice. Attachment theory emphasises the importance of early childhood experiences on our view of self and others, which we carry into future relationships. Feminist theory, primarily applicable in situations of male-perpetrated violence against mothers, highlights grievance and the symbolic role of violence in expressing hostility towards women and as a rejection of non-masculine traits. The chapter identifies gaps in literature, stressing the need for more research on AVITH as a distinct predictor of IPV. It also emphasises addressing fragmented responses to AVITH, advocating for targeted interventions to disrupt the trajectory towards IPV and prevent violence across generations.