The Tale of Achilles and His Heel

At a Glance

Central figures: Achilles, the greatest Greek warrior, son of the mortal king Peleus and the sea nymph Thetis; Paris of Troy, who shoots the fatal arrow; and Apollo, who guides it.
Setting: Ancient Greece and the plain before Troy, during the Trojan War; the myth is told most fully in Homer’s Iliad and in later accounts of the war’s conclusion.
The turn: Thetis dips the infant Achilles in the River Styx to make him invulnerable, but the heel by which she holds him never touches the water.
The outcome: Paris, guided by Apollo, shoots Achilles in that heel during the final stages of the Trojan War, and the wound kills him.
The legacy: The unprotected heel - the one oversight in Thetis’s attempt to cheat death - costs Achilles his life and leaves his name permanently attached to the idea of a single, fatal weakness.

Thetis knew what was coming for her son. She had heard it from the gods themselves: Achilles would not grow old. He would be magnificent and he would be brief, a flame thrown up and consumed. What a mother with that knowledge does next depends on the mother. Thetis went to the River Styx.

The Styx was the river the gods swore by, the boundary between the living world and the dead one, and its water was said to carry something of that absoluteness - whatever it touched became untouchable. Thetis took the infant Achilles to its banks and lowered him in, holding him by the heel so that the current swept across every part of him: his chest, his throat, his face, the soles of his feet. All of him except the place where her fingers gripped. She drew him out. She wrapped him in cloth and carried him home. Whether she noticed the oversight, or told herself it was too small to matter, the stories do not say.

The River’s Unfinished Work

Achilles grew into exactly what his mother had hoped he would be. He was faster than any man alive - swift-footed Achilles, the epithet followed him like a second name - and in battle he was close to unstoppable. The spear-work, the footwork, the controlled savagery of it: he had learned from Chiron, the centaur, who had taught him music and medicine alongside the arts of war. By the time the Greek ships gathered at Aulis to sail for Troy, Achilles at the head of his Myrmidons was the Greeks’ sharpest weapon.

And he knew what fighting at Troy meant for him. Thetis had laid it out plainly: two roads, and only two. He could go home, live long, grow gray, be forgotten. Or he could sail for Troy and earn kleos - glory, the kind that outlasts a man’s bones - and die before he was old. Achilles sailed. He had already made that choice somewhere in his blood before his mother spoke the words.

The Rage of Achilles

In Homer’s telling, what nearly destroys the Greek campaign is not Trojan bronze but Achilles’s own fury. Agamemnon, the high king who led the expedition, stripped Achilles of a prize that was rightfully his - a woman named Briseis, taken from Achilles’s share of the spoils. The insult was calculated and public. Achilles did not attack Agamemnon. He did something worse. He sat down.

He withdrew himself and his Myrmidons from the fighting and let the Greeks suffer without him. Hector drove the Trojans to the Greek ships. Men died by the dozens. Still Achilles sat. He had asked his mother to petition Zeus to punish the Greeks for their commander’s arrogance, and Zeus, who owed Thetis a favor, obliged. Greek prayers and Greek blood were both spilled in abundance while Achilles watched from the shore.

What broke him was Patroclus. His closest companion - some accounts say the dearest person in the world to him - put on Achilles’s own armor and led the Myrmidons out. Hector killed him and stripped the armor off his body. The grief that followed was not the cold, considered rage of an offended warrior. It was something rawer. Achilles put on new armor, forged by Hephaestus himself at Thetis’s desperate request, and went back to the field.

Hector’s Death on the Plain

What happened next is one of the most precisely described killings in the Iliad. Achilles ran Hector down outside the walls of Troy - Hector who had tried to negotiate, who had offered terms, who had three times led the Trojans in a circuit of the walls hoping to draw Achilles out of reach. There was no mercy in Achilles that day, and no hesitation. He drove his spear into Hector’s throat where the neck meets the collarbone, and Hector fell.

Achilles lashed the body to his chariot by the ankles and dragged it around the walls. He did it again the next day. And the day after that. The gods watched and some of them were troubled by it. Eventually Hector’s father, Priam, old king of Troy, came alone through the Greek camp at night to ransom his son’s body. He kissed the hands that had killed his child. Achilles gave him Hector’s body back. It was one of the few moments in the story where grief outweighed rage.

Apollo’s Arrow

Achilles’s death comes after the Iliad ends, in accounts that Homer gestures toward without narrating directly. Paris - who had started all of this by taking Helen from Sparta - drew his bow on the battlefield. Paris was not a warrior in the Achillean mold: he was an archer, which the Greeks regarded with some ambivalence, the bow being a weapon for those who preferred to kill from a distance. But Apollo guided his hand. The arrow flew and found the heel.

That one small gap - the place where Thetis’s fingers had been - opened to the arrowhead. The wound was enough. Achilles fell on the plain before Troy, far from home, at the age his mother had always known he would be. His armor was fought over by Ajax and Odysseus. His ashes were buried with those of Patroclus. The Myrmidons mourned.

Thetis mourned. She had held him as carefully as she could over those dark waters. The Styx had done everything it was asked to do. It was only the heel - that one small patch of skin that never touched the river - that the world got in through.