the party arrive at the stygian witches' lair, and they reveal that the only way to defeat the kraken is with the head of the gorgon medusa, who lives in the ruins of a temple at the edge of the underworld and whose deadly gaze can turn onlookers into stone. perseus, io, suleiman, draco and the surviving members of the group enter the underworld. the men venture into the temple, while io, who is a woman and forbidden from entering, waits outside. medusa kills everyone except perseus, who, with the use of his reflective shield to look at her with his back turned, decapitates her.