Old Gods never die… Or so Athena thought. But then the feathers started sprouting beneath her skin, invading her lungs like a strange cancer, and Hermes showed up with a fever eating away his flesh. So much for living a quiet eternity in perpetual health. Desperately seeking the cause of their slow, miserable deaths, Athena and Hermes travel the world, gathering allies and discovering enemies both new and old. Their search leads them to Cassandra—an ordinary girl who was once an extraordinary prophetess, protected and loved by a god.