Christmastime has come to Scotland, and Delaney and all her coworkers at the Cracked Spine, the quirky bookshop in the heart of Edinburgh, are all in the holiday spirit. Between mugs of hot chocolate and nibbles of gingerbread, Delaney has been given the task of tracking down the provenance of a mysterious box of objects that her boss, Edwin, has recently acquired. In it are various trinkets, but what really catches Delaney's eye is a worn copy of A Christmas Carol, where she also finds an old photo tucked inside. On the back is a name, which leads her to a woman whose granddaughter has gone missing. When it becomes clear that the box might be connected to the missing girl, Delaney is pulled into the intrigue, and takes it upon herself to figure out what really happened—and why.