Empirical research by Kim English and several co-authors reporting that polygraphy generates dramatic increases in sex offender admissions of numbers and types of victims prior to conviction and sexually risky behaviors while under supervision. Describes polygraphy as one side of a triangular sex offender containmnet strategy, supervision and treatment being the other two sides. Ethical and legal issues are also discussed. Reader caution: some of the legal arguments set forth in this article have since been rejected in some Federal Courts. See particularly, Anetelope v USA, 9th district, DC No. CR-00-00039-DWM