Book excerpt: Mixing erotic vignettes with practical how-to suggestions and personal insight, 'Sensuous Magic' is Califia's classic beginner's guide to S/M for couples who harbour fantasies of erotic dominance and submission. Experienced players will appreciate the breadth of Califia's knowledge of safety and technique and his insights into the psychology of S/M. Novices will be reassured by Califia's honest, unpretentious approach.