Once upon a scary time ... Thirty years ago, Harold Biddle died in a tragic accident. Now the teenage kids of Harold's classmates are determined to find out what really happened to him all those years ago ... as long as Harold's spirit doesn't exact his revenge first! But Harold Biddle isn't the only thing threatening the town of Port Lawrence. From doppelgangers to haunted books and one creepy dummy, Isaiah, Margot, James, Lucas, and Isabella have to fight to stay alive or risk becoming monsters themselves! This official novel tells the story of Goosebumps Season 1-plus additional scenes and information not seen on the show! Based on the hit Scholastic book series by R.L. Stine.