Intensive family- and community-based treatment for children and adolescents, ages 10-17, with sexually abusive behavior problems and their families in the youth’s natural environment over a 5- to 7-month period.  This is a clinical adaptation of Multisystemic Therapy (MST) that has been specifically designed and developed to treat youth (and their families) for problematic sexual behavior. Building upon the research and dissemination foundation of standard MST, this intervention is uniquely developed to address the multiple determinants underlying problematic juvenile sexual behavior.  It is delivered in the community, occurs with a high level of intensity and frequency, incorporates treatment interventions from MST, and places a high premium on approaching each client and family as unique entities. Treatment incorporates intensive family therapy, parent training, cognitive-behavioral therapy, skills building, school and other community system interventions, and clarification work. Ensuring client, victim, and community safety is a paramount mission of this intervention. Each youth/family has uniquely and collaboratively designed individual treatment plans, and each treatment site is encouraged to conjointly develop locally defined outcomes that suit community needs.