The Parent-Child Psychotherapy Program (PPP) is a multifamily group therapy intervention for parents and young children at high risk for intergenerational patterns of neglect, abuse, and disorganized attachment. A "developmental and experiential model" that incorporates principles of attachment theory, the PPP addresses parent and child needs simultaneously in the context of structured activities, free play, and separate parent- and child-only groups. Therapeutic objectives aim to shift parents' internal working models of relationship toward increasing attachment security, to change parent-child behaviors to promote safety and exploration, to build a foundation for parent-therapist collaboration, and to propel children's healthy development in a safe, predictable, and emotionally attuned environment. The authors present the history of the PPP, its underlying assumptions, and specific interventions with a family.