香港三级片：光影背后的秘密与挣扎宝贝我想尿在你子宫里好不好

　　Until the end of the nineties, the Hong Kong cinema that explored the limits of sex and violence without shame was labeled "category III". Calum Waddell's new documentary, an exhaustive investigator of the mysteries of genre film, is immersed, through interviews and archival images, in one of the most wild and exciting popular film cycles.