Sphynxes Wild — Esther Friesner

The Sphynx is back--
and she's not happy. In the human guise of a beautiful Greek shipping heiress, she's arrived in America with a new set of riddles guaranteed to obliterate mankind. And what better place to start than an Atlantic City casino, where trickery and murder will go completely unnoticed.

But the soul-thirsty sphynx hasn't counted on crossing paths with Sanchi, a casino worker once touched by magic. More than a chance has brought him to the city of lost fortunes and dreams. Now he's in the middle of a battle between the Sphynx and the last true sorcerer, the climax of a centuries-long war in which Sanchi will play the most crucial role of all...