In the Moon of Asterion: A Saga of Ancient Greece (The Child of the Erinyes Book 3)
Book Three.... The Child of the Erinyes series.
There is a beast in the labyrinth... a monster. The people say he is both man and bull; they call him Asterion.
Of all Crete's citizens, only two dare enter his lair. One bears his child. The other sees the Goddess in his eyes. Terrifying yet compelling, the beast offers Crete's only hope for redemption.