This chapter briefly describes contemporary approaches to the treatment of sex offenders before considering this field through the lens of group dynamics and group therapy. Whilst there are undeniably logistical and financial advantages to treating sex offenders within group contexts, we will outline what we believe are the clear clinical and therapeutic advantages. We discuss recent research into group work and sex offenders. We will then finish with a discussion of the general implications for sex offender therapist training, qualities, and skills.