This resource presents a fictional narrative titled 'Mystery of the Iron Door,' centered around a character named Leo who experiences fear in a seemingly haunted hallway. The story prompts readers to analyze the nature of terror described within, distinguishing between internal and external sources of fear. Internal terror arises from the character’s imagination and emotions, while external terror is presented through tangible threats in the environment. Students are invited to draw conclusions about Leo's situation, focusing on whether the source of his fear is internal or external, and to support their reasoning with textual evidence.