Atlantis Episode 1.06 The Song of the Sirens

Desperate to win over Medusa's heart, Hercules pays a visit to a powerful witch, Circe. But events take a malevolent turn when Hercules realizes he has unleashed a potent but toxic enchantment. With a bitter chain of events rapidly unfolding, it's up to Jason to undo history before it is too late. As he re-traces Hercules' steps into the mountains, he is unaware that a deadly trap has been set for him; one with far-reaching consequences beyond the fate of just his friends.