This report draws on a number of publications resulting from a project looking at effective cross-agency responses to severe abuse. This includes two published systematic searches of the literature (Herbert & Bromfield, 2016b, 2017a), a national survey of directors of Child Advocacy Centres in the United States (Ghan, 2017; Herbert, Walsh, & Bromfield, Under Review), a report comparing cross-agency practices in responding to severe child abuse nationally (Herbert & Bromfield, Under review-a), a draft theory of change for multi-disciplinary teams (Herbert & Bromfield, Under review-b). These articles have also been translated into two reports for the New South Wales Ombudsman’s Office and the Joint Investigation Response Team (JIRT) agencies (NSW Police, NSW Health, NSW Family and Community Services) for their review of the JIRT arrangement (Herbert & Bromfield, 2017b, 2017c). This report also references the interim report of the MIST evaluation (Herbert & Bromfield, 2016a).