It's Beginning to Look a Lot Like Murder by Amy Barrett

5.20

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?