Some people don't do a lot of . . . beating around the bush. Instead, they pursue . . . alternate points of entry, the backdoor instead of the front. In the first five vignettes in her "Backdoor Erotic Romance" series, it's all Greek to Joy Zelig In "Where Does Love Go?" the narrator calls her slightly younger lover "Daddy" and, for the most part, obeys him in all things. He wants something she's never given him before; she's more or less willing-and,...