Whether in front of the camera or behind it, Candice Vadala understood herself as both an artist and an entrepreneur. As Candida Royalle (1950-2015)--underground actress, porn star, producer of adult movies, and staunch feminist--she made a business of pleasure. She helped crystalize the broader hedonistic turn in American life in the second half of the twentieth century: a period when the rules of sex were rewritten; when the white-hot "sex wars"...