These five seminars give an introduction to the main branches of theory, research and practice that inform clinical interventions in the field of early relational health. The course begins looking at attachment, both in children and adults, and covers when this relationship becomes seriously insecure. There is an overview of babies’ brain development, including how this is affected by maltreatment. The adverse factors that may distort the caregiving relationship are examined, as well as the range of clinical practices that may be applied to help a vulnerable family. The course ends with considering some of the events in the early years that may lead to violent behaviour in adolescence and adulthood, providing a recapitulation of all previous topics.