This volume provides an understanding to the assessment, management, and treatment of sexual deviance and paraphilic disorders. The international panel of contributors - noted experts on the topic - illuminate the emerging theories that help to explain the developmental influences and pathways of sexual deviance and its connection to offending behaviour. The text considers various developmental influences such as neurobiological pathways as well as the effects of pornography. The contributors highlight the assessment and diagnosis of sexual deviance and explore the links to offending behavior such as rape fantasy, algolagnic paraphilia, online viewing of indecent images of children, and sexual sadism. The book examines the effectiveness of a variety of current treatments including behavioral, pharmacological, cognitive behavioral therapy, and systemic treatment.