Directed by: Don Chaffey
Starring: Laurence Naismith, Gary Raymond, Nancy Kovack, Todd Armstrong
Visible crew/equipment: When the hydra comes out of the cave,look closely at the ground. The track the hydra is being pulled across is visible.
Visible crew/equipment: The very first shot of a Harpy attacking the blind man is not up to the high standard of the rest of Harryhausen's work in this film - you can easily see two wires suspending the model as it "flies" down. These are better hidden in later shots.
Revealing mistake: After Jason's fight with Acastus, when Medea is telling Jason of the flower which can heal his wound, if you look past Medea you can see a mountain in the distance. On top of the mountain you can see a lighted building of some sort that appears to be a modern structure. (01:15:05)
Zeus: If I had to punish every blasphemy, I would have no followers.