A Killing Cold by Kate Alice Marshall

Theo is engaged to wealthy Connor Dalton. Having not met anyone in Connor's family except his older sister Alexis, the couple is spending two weeks at Christmastime at the family's mountain retreat. Soon after arriving, Theo begins to feel uneasy. She feels as if she has been to this place before. It also doesn't help that Theo has been receiving anonymous texts telling her to "stay away from Connor Dalton." Who could be trying to warn Theo? Soon, Theo realizes she's in danger and doesn't know who she can trust. Will Theo be able to get away from the Dalton's safely? If you enjoyed First Lie Wins, give this novel a try.