When a mysterious runaway van crashes into St Smithen`s on the first day of the new school year, Poppy knows it`s going to be an action-packed term! But when accidents continue to happen at St Smithen`s, Poppy can`t shake the feeling that her every move is being watched. With the Christmas holidays looming, secrets lurking in every corner and rumours of a dangerous beast on the loose, Poppy must unravel her biggest mystery yet. Can Poppy unmask the hidden spy before someone gets hurt?