Samantha Sweet is back at Sweet's Sweets, turning out her amazing cakes and pastries for the busy holiday season, when Emily Plankhurst, the new young librarian in town, stops in. Emily tells Sam a strange story involving a hidden niche in the library revealed to her in a vision, supposedly, by her dead grandmother. Would anyone believe this farfetched story? Possibly not anyone but Sam, who has had more than a few unexplained occurrences in her own life.

It turns out the hidden space contains a rare painting, The Ghost of Christmas, which was believed to have been destroyed in a fire twenty-five years ago at the luxury home of a hedge fund billionaire. A young man died in the fire and the insurance company paid the claim for the valuable painting. But now that the painting has turned up, how can Emily prove that her own grandfather wasn't the one behind the arson?

It's a sticky situation when she approaches Sam with the case. If she turns the painting over to the authorities, they will almost certainly believe that her grandfather was involved in the theft of the piece and most likely complicit in insurance fraud as well. Would the police actually take him out of the Alzheimer care facility where he now resides and throw him in jail? Emily's only chance of saving her grandfather's life, and the reputation of the family-founded library, is to investigate the old crime and find out who really stole The Ghost of Christmas. And Samantha is the only person she can trust to help her, one of the few who remembers when the fire started and the insurance claim was paid. It's a Christmas mystery with a lot of twists and turns!