Sibling sexual abuse is believed to be the most common and long-lasting form of all intra-familial abuse, with estimates suggesting that it is five times more prevalent than parent-child sexual abuse. This book draws on unique research from two studies which examine the nature, impact and response to sibling sexual abuse in England and Wales. Given the complex and underreported nature of sibling sexual abuse there are questions surrounding whether current interventions are appropriate in helping victims/survivors, children and young people who have been harmed and their families. There is growing evidence that highlights a lack of appropriate practitioner guidance and training which then leads to insufficient support, impacting negatively on long term outcomes. This book offers significant findings for policy, practice, and community engagement. It is written by authors with that have expertise in criminology, psychology, public health, social science, social work and also front-line practitioner experience.