• Author’s Purpose: To create suspense and engage readers by revealing a surprising plot twist that challenges their expectations.
• Reasoning: The author likely aimed to keep readers invested in the story by introducing an unexpected change in the dynamics between characters, specifically by unveiling the hero’s best friend as the antagonist. This revelation not only heightens tension but also encourages readers to ponder the implications of betrayal and the resolution of the conflict, ultimately enhancing their interest in the story's conclusion.