The Hand of Amun by Juliet Hastings
An erotic historical set in ancient Egypt.
Marked from birth with the symbol of Amun, the young, Naunkhte must enter a life of dark eroticism as a servant at his temple. She becomes the favourite of the high priestess but, when she's accused of an act of sacrilege, she is forced to flee to the city of Waset. There she meets Khonsu, a prince of the Egyptian underworld, whose prowess as a lover is legendary. But fate draws her back to the temple and she is forced to choose between two lovers - one mortal and the other a god!