My local bookseller's recommendation when I asked for "a holiday/winter set read - without the fluff and traditional Christmas romance storyline"....yup, this fits the bill. 

Holiday thriller with multiple timelines and POVs across both timelines. I, unfortunately, called the entire plot line and both reveals - but I wouldn't say it was obvious; I had a guess but wasn't sure it was correct until the official reveal. Enjoyable nonetheless.