Perseus and Medusa

King Acrisius of Argos received a terrible prophecy from the oracle at Delphi: he would be killed by his own grandson. Determined to thwart fate, Acrisius imprisoned his only daughter, the beautiful Danaë, in a bronze chamber buried deep in the earth, where no man could reach her.

But Zeus, king of the gods, was not deterred by mortal walls. He transformed himself into a shower of golden rain and descended through the bronze roof, coming to Danaë in her prison. From this divine union, she conceived a son: Perseus.

When Acrisius discovered the baby, he could not bring himself to kill his own daughter and grandson directly, fearing the wrath of the gods. Instead, he sealed them both in a wooden chest and cast it into the sea, leaving their fate to chance. The chest floated across the Aegean until it washed ashore on the island of Seriphos, where a fisherman named Dictys found and rescued them.

Perseus grew to manhood on Seriphos, strong and brave and beloved by his mother. But the island's king, Polydectes, lusted after Danaë and saw Perseus as an obstacle. When Perseus boasted at a feast that he could bring the king any gift he desired, Polydectes demanded the head of Medusa, the most terrible of the Gorgons.

Medusa had once been a beautiful maiden, a priestess of Athena. But she had lain with Poseidon in Athena's temple, and the goddess, in her fury, transformed Medusa's lovely hair into writhing serpents and cursed her face so that any who looked upon it would turn instantly to stone. She dwelt with her two immortal sisters, Stheno and Euryale, at the edge of the world, surrounded by the petrified remains of foolish heroes.

No mortal could hope to slay Medusa and survive. Polydectes was certain he had sent Perseus to his death.

But Perseus was a son of Zeus, and the gods favored him. Athena, who hated Medusa for her desecration, appeared to Perseus and offered her aid. She gave him a polished bronze shield, bright as a mirror. "Never look directly at the Gorgon," she warned. "Watch her reflection, and you will be safe."

Hermes, the messenger god, brought his own gifts: winged sandals that allowed Perseus to fly, a cap of invisibility from Hades, and a curved sword of adamantine that could cut through anything. He also revealed that Perseus must first find the Graeae, three ancient sisters who shared a single eye and tooth among them, and force them to reveal the location of certain nymphs who possessed a magical kibisis, a bag that could safely contain Medusa's head.

Armed with the gifts of the gods—winged sandals upon his feet, the cap of darkness upon his brow, the mirrored shield upon his arm, and the unbreakable sword at his side—Perseus set forth to accomplish what no hero had done before.

Perseus flew to the ends of the earth, where the Graeae sat passing their single eye between them. He snatched the eye and refused to return it until they told him where to find the nymphs. Reluctantly, they complied. The nymphs gave him the kibisis and directed him to the lair of the Gorgons.

He found the three sisters sleeping in their cave, surrounded by stone statues of men frozen in expressions of terror. Moving with utmost care, Perseus used the reflection in Athena's shield to guide his sword. With a single stroke, he severed Medusa's head. From her neck sprang two beings: the winged horse Pegasus and the giant Chrysaor, both fathered by Poseidon.

Perseus stuffed the head into the kibisis just as Stheno and Euryale awoke with terrible screams. But he was already invisible and flying away on Hermes's sandals, leaving the immortal sisters to wail over their murdered sister.

Flying homeward over the coast of Ethiopia, Perseus saw a beautiful maiden chained to a rock by the sea, waves crashing around her feet. This was Andromeda, daughter of King Cepheus and Queen Cassiopeia. Her mother had boasted that Andromeda was more beautiful than the sea nymphs, and Poseidon, in his wrath, had sent a sea monster to devastate the kingdom. The oracle had decreed that only Andromeda's sacrifice could appease the god.

Perseus landed beside the king and queen and struck a bargain: he would slay the monster in exchange for Andromeda's hand in marriage. They agreed. As the great beast rose from the waves, Perseus drew the Gorgon's head from the kibisis and held it before the creature's eyes. The monster turned to stone and sank beneath the sea.

Perseus freed Andromeda and made her his wife, despite the protests of Phineus, a prince who had been betrothed to her but had done nothing to save her. When Phineus and his followers attacked the wedding feast, Perseus once again produced Medusa's head and turned them all to stone.

Returning to Seriphos, Perseus found that Polydectes had been forcing his mother to take refuge in a temple to escape the king's advances. Perseus strode into the palace where Polydectes sat feasting with his supporters. When they mocked him for returning alive, he drew forth the Gorgon's head and turned every one of them to stone.

He gave the divine gifts back to Hermes and Athena, and presented Medusa's head to Athena herself, who set it upon her aegis, the goatskin shield she wore, where it would terrify her enemies forever after.

Years later, Perseus traveled to the city of Larissa to compete in athletic games. When he threw the discus, a gust of wind carried it into the crowd, striking and killing an old man who had come to watch. The old man was Acrisius, who had fled Argos when he heard his grandson was returning. The prophecy was fulfilled, not through malice, but through the inescapable workings of fate.