Most people picture Medusa as a snake-haired monster whose gaze turns flesh to stone, but some of the oldest sources describe a beautiful mortal woman who was violently wronged and then rewritten by the powers that destroyed her. This deep dive builds a narrative biography of Medusa from Hesiod, Apollodorus and Ovid, through classical vase painting and Renaissance imagery, to Freud, Jane Ellen Harrison, Joseph Campbell and the feminist reclamations of the 20th and 21st centuries.

We examine why Medusa alone among the Gorgon sisters was mortal, how Athena punished her rather than Poseidon after the temple assault, and why Perseus’ divine loadout of winged sandals, invisibility helm, unbreakable sword and mirrored shield makes the beheading look less like a duel and more like an asymmetrical assassination. The episode then follows the severed head as it births Pegasus and Chrysaor, petrifies Atlas into a mountain range, seeds the Sahara with vipers, creates coral reefs and ends up mounted on Athena’s aegis.

• Medusa’s family tree as daughter of the sea gods Phorcys and Ceto and sister to Stheno and Euryale
• Why ancient myth punished the mortal victim and protected the god who initiated the assault
• Harrison’s theory that the Gorgon began as a ritual apotropaic mask and gained a backstory later
• Campbell’s reading of the myth as a coded memory of invaders stripping priestesses of their masks
• From Freud’s castration anxiety to Helene Cixous’ laughing Medusa and MeToo era portraits