I've just finished re-reading The King Must Die, Mary Renault's lovely retelling of the Theseus story. She does a wonderful job of getting inside the head of someone who believes the capricious, interfering gods of the ancient Greeks are real and present. Her portrayal, too, of the supplanting of a Matriarch---Persephone of Eleusis---and indeed, the ending of the older ways at the fall of the Minoan empire, is fascinating.
If you haven't read any of her books, I strongly recommend you start with this one. And now, I'm going to go find a copy of The Secret History and re-read that, because I want to compare Renault's depiction of Maenads to Tartt's of faux-Maenads.