Miguel's mysterious adventure that began with his job as the library assistant in the haunted library in the school basement continues as he uncovers several key pieces to the puzzle! Miguel discovers the secret behind the pass code system for top secret portals and passageways hidden in the school and believes he has stumbled across the key to finding answers for the whole mystery! After being caught by the librarian who he believes is a ghost haunting the school basement, Miguel is forced to clandestinely investigate the mysterious new changes to the library and find the new access points to the portals. This ongoing plot will have you on the edge of your seat as you discover with Miguel new clues to his mystery in each book in this series! Read on if you dare!