Zinner provides a clear, excellent companion paper to that of Shapiro, a member of the same research group. He emphasizes the importance of viewing the whole family of the borderline adolescent as a patient and of presenting this view clearly to the family from the outset. This view is implemented by a treatment approach including: 1) individual treatment of the adolescent by one therapist; 2) conjoint treatment of the parents by a second therapist; and 3) conjoint treatment of the entire family by both, functioning as co-therapists. With the help of case vignettes, he illustrates the difficulties commonly encountered in engaging families in this treatment approach, as well as the therapeutic gains which ensue.