This is a Scotland-based research study being undertaken by CELCIS, the Centre for Excellence for Children’s Care and Protection. CELCIS was asked by the Scottish Government to carry out this research study with the aim of gathering evidence to inform decision-making about how best to deliver children's services in Scotland in light of the proposed introduction of the National Care Service, and its commitment to keep The Promise of the Independent Care Review. The purpose of the research is to answer the question: What is needed to ensure that children, young people and families get the help they need, when they need it? The research study has four separate strands of work, which together aim to provide a comprehensive and holistic approach to answering this question. The findings of each strand of work will be published separately, in a full research report and a shorter summary report. We hope that this overview acts as a guide to help you to navigate through each strand of the research, and the different evidence that these will present. A final report will be published at the end of the study which will draw together and synthesise all four strands of the findings to address the research question