Diana est à la tête d'une entreprise florissante à San Francisco. Alors que les affaires vont bon train durant la saison des fêtes, sa tante est retrouvée morte chez elle, vraisemblablement victime d'une chute dans l'escalier. Mais Diana n'y croit pas. Elle se rend dans la ville de sa tante et commence à mener sa propre enquête pour déterminer s'il s'agit ou non d'un accident...

In the middle of preparing for her business’ biggest season, Diana Hart learns she inherited an old house from her beloved aunt. Matt, the estate attorney and her former flame, insists she stick around and sort out the details over Christmas break, as he tries to rekindle their old romance. But the longer Diana stays the more she finds clues that suggest her aunt was murdered, and that the culprit might be her handsome companion. Yet the bigger question is–will she survive Christmas?

Em meio aos preparativos para o Natal, Diana Hart descobre que herdou uma casa antiga de sua tia.