This article describes adolescent satanic practice as studied by the authors working with affected families in 3 Southwestern states in a 7‐year period. Because adolescent involvement in satanism seems to be widespread and may be growing, counselors need to understand how satanism is related to religion, family dynamics, and adolescent rebellion. Counselors also need to recognize how their personal values compare with values inherent in satanism; only from a position of psychological equilibrium can counselors potentially help satanically involved clients. This article reviews the authors' observations of signs and symptoms, definitions and distinctions, family dysfunction, and individual dynamics related to satanism. A systemic perspective is suggested.