Child maltreatment has been associated with a host of negative outcomes including impaired social relationships (Rogosch, Cicchetti, Aber, 1995), depression (Toth, Manly, Cicchetti, 1992), poor self-concept and motivation (Vondra, Barnett, Cicchetti, 1990), and delinquency and conduct problems (Cook etal., 2005; Grotevant etal., 2006; McCabe, Lucchini, Hough, Yeh, Hazen, 2005; Ryan Testa, 2005). An assessment of the mental representation of attachment relationships could offer additional relevant and useful information to the evaluation of youth in foster care, and could inform treatment and placement considerations. The Adult Attachment Projective Picture System (AAP) is a relatively new measure of internal representations of attachment based on the analysis of a set of stimuli designed to systematically activate the attachment system (George, West, Pettem, 1997). This article considers the use of the AAP with a maltreated adolescent in a clinical setting and uses a case study to illustrate the components of the AAP that are particularly relevant to case conceptualization and interventions. Copyright © Taylor & Francis Group, LLC.