Perseus then enters the Gorgon's lair, where he uses the reflective underside of his shield to deceive Medusa, decapitate her, and collect her head; but the shield is dissolved by her caustic blood. As Perseus and his party set to return, Calibos enters their camp and punctures the cloak carrying Medusa's head, causing her blood to spill and produce three giant scorpions. Calibos and the scorpions attack and kill Perseus's remaining escorts, including Thallo, whose death Perseus mourns.