All Paislee wants for Christmas is for her new home to be finished, but it looks like she'll have to wait for New Year's Day. Whether the paint on the walls has dried or not, she'll host a feast for her twelve-year-old son Brody, Grandpa, their black Scottish terrier Wallace, and friends--including police station receptionist Amelia Henry and her brother McCormac, whose black locks can fulfill the Scottish first-footer tradition that a tall, dark-haired man should be the first person to enter your home on New Year's to bring good luck.

But McCormac's luck is about to run out. During Hogmanay--when the Scots welcome the New Year with dancing, bonfires, and midnight fireworks--he collapses as the sky brightens in a blaze of color. A shooter has used the noise of the fireworks to hide a gun's blast. Amelia is inconsolable, and Paislee vows to do whatever she can to help DI Zeffer solve the murder--even if it puts her in the killer's sights next . . .