Double-Edge: The Intersection of Transgender and BDSM is a smart book that tackles difficult, fascinating, controversial subjects with panache and compassion. It's the latest public service from the fierce and tender pagan priest, activist, farmer, community organizer, oracle, nightmare of those devoted to normal and ordinary, and all-around role-model Raven Kaldera, whose complex identity gives him a rather comprehensive perspective on the topics of kinky sex, alternative relationships, and gender variance.