This was the first book in a long time that I deemed worthy of staying up (way too late) to finish. I admit - it’s by far the least interesting Agatha Christie novel I’ve read, but it satisfied the Christmas book craving, and while I guessed a few elements, I wasn’t able to guess the final twist.  The setting of the story was pretty bland - there wasn’t much interesting about the house.  The characters were obviously well-developed but also uninteresting and neither likable or unlikeable.