In the original Grimms' fairy tale, the hero never succeeds in shivering out of fear. At the end, his wife dumps a bucket of water on him causing him to shiver from the cold.
This episode, which is all about fear, features two horror film icons: Vincent Price (Narrator) and Christopher Lee (the King).
The story was heavily influenced by the medieval adventure of Sir Lancelot du Lac called "Les Merveilles de Rigomer" in which he spends a night in a haunted castle and undergoes almost the same ordeals as the youth.