After experiences of neglect, the loss of parents, or even sexual abuse, children often struggle to form secure attachments to adults. These severely traumatized young patients typically lack the experience of positive affection that does not come at the cost of physical or emotional pain. Being accepted by adults for who they are is initially a confusing experience for these children. For many years, the educational and therapeutic support for children with attachment disorders has successfully relied on key person care. In this approach, each child in inpatient treatment is assigned a dedicated caregiver who fills the void left by their parents. Despite numerous therapeutic successes, this treatment approach has not yet been described in theoretical terms. Based on a collected case study and further analysis.