Perseus waited for the right moment then took the eye, and demanded information on the Nymphs of the North. Perseus got three magic gifts from the Nymphs, which were flying sandals, an invisibility cloak, and a magic wallet.
The Road Back
Perseus then entered a cavernous area where Medusa and the Gorgons were, and remembering he had to look in the reflection of his shield to see them, saw that Medusa was sleeping. Athena told Perseus that Medusa was in the middle. Then, he sneaked up to Medusa and struck off the head of Medusa.
Perseus stuffed the head into his magic wallet with all of it's snakes still hissing and wriggling. The other Gorgons woke when they heard the headless body of Medusa thrashing about. Perseus slayed a sea monster on the way back, which was about to devour a beautiful princess who became the consort of Perseus.
Return with the Elixir
Perseus, going to start his journey back, had a pursuer or two. The Gorgons were searching for Perseus, but could not because Perseus was wearing the invisibility cloak and wearing the flying sandals. Perseus traveled back home.
Perseus strode into Polydectes' palace and told him that he had brought the head of Medusa. Polydectes didn't believe Perseus and found him as a liar. This causes Perseus to realize that he had been fooled. He pulled out Medusa's head and Polydectes turned to stone as soon as he saw it.
Perseus realized that he had been fooled by Polydectes. So Perseus pulled Medusa's head pout of his magic wallet, showed it to Polydectes, who turned to stone as soon as he saw it. Dictys became ruler of the island and afterward Perseus sailed to Argos to see Danae, his mother, and his wife.