The Storyteller: Greek Myths is a British liveaction/puppet series that originally aired in 1990.
The evil King Polydectes sends the young hero Perseus to kill the gorgon Medusa. Perseus used his weapons in order to slay Medusa. On his way back he used the gorgon´s head to turn Atlas to stone. Upon Persus´return , the king did not believe that Perseus return with the true head. Perseus proved it by using the gorgon´s head to turn king Polydectes to stone.