This article describes adolescent satanic practices as studied by the authors working with affected families in 3 southwestern states over a 7-year period. A case example is given. Counsellors need to address underlying individual & family pathology, suicidal & homicidal ideation, self-mutilation, drug abuse, sexual abuse, & victimization by control. Concurrent family asssessment is imperative to examine the satanic involvement in a family system context. (27 refs.)