The Dead Kid Detective Agency embark on another (mis)adventure set against a backdrop of yuletide pandemonium. October Schwartz and her five deadliest friends discover dark supernatural forces at work in Sticksville, where they are hot on the trail of those responsible for Morna MacIsaac's death in 1914. When her living friend Yumi becomes the target of a menacing harassment campaign at school, October and her ghostly friends must face the challenge of solving two concurrent mysteries at once.