The Five Masks of Dr. Screem: Speical Edition (Goosebumps Hall of Horrors Series #3)

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It's Halloween and Monica Anderson is out Trick-or-Treating with her younger brother. They knock on the door of an old, creepy house and are met by a strange woman who pleads for their help. Every year she must battle for the control of five sacred masks with the evil Dr. Screem. These artifacts have the power to manipulate the world around them. Monica doesn't want to help at first but then Screem bursts in ...