Fayson has been dreaming of going back to the island ever since she left. But no sooner is she reunited with her friends than they start squabbling about membership of their new detective agency. The group has to get their act together fast, as a new case comes their way: a haunted wardrobe that keeps making a spine-chilling sound. More frightening still, each member of the agency receives letters threatening to reveal their closest secrets. With inspiration from her favourite mystery novels, Fayson must track down clues to get to the bottom of these strange events.