"The only mortal daughter of two sea gods, Medusa works as a priestess in Athena's temple when she suffers a horrific violation at the hands of Poseidon. Insulted by the desecration of her name and to send a message, Athena transforms Medusa into the snake-haired creature of legend: A creature who, with one look, will petrify anyone who meets her gaze; whose power will ignite a king's fury (and fear) so greatly that he will instruct a boy, Perseus,...