As bookstore owner Addie Greyborne shares the loving lesson of The Gift of the Magi, the spirit of the season falls prey to a thief and a killer . . .

There's no place like the seaside Massachusetts town of Greyborne Harbor for the holidays, and there's no better feeling for Addie than donating to the lighthouse museum's Twelve Days of Christmas charity fundraiser. Of the dozen books she'll be offering as prizes from her Beyond the Page Books and Curios shop, the most special volume is a first edition of The Gift of the Magi imported from England—signed by O. Henry! Addie receives an unexpected Christmas bonus when the book is hand delivered by visiting Detective Inspector Noah Parker, whom she met in England, and has been daydreaming about ever since.

But on the night Addie delivers the book to the museum, someone posing as one of Santa's Little Helpers swipes it—and the rest of the charity gifts. As if the theft wasn't bad enough, a body is found on the rocks outside the lighthouse, believed to be murdered. Now, it's up to Addie to connect the clues, find stolen goods, and catch a killer—in order to usher in a Happy New Year . . .