Death and the Dancing Footman by Ngaio Marsh
I love mysteries, but if I had to narrow the genre down to my favorite type, I'd pick vintage mysteries. Even narrower, I'd go with country house mysteries, preferably at Christmastime, but winter will do. Death and the Dancing Footman is one of those. Our Inspector Roderick Alleyn doesn't show up until about 2/3rds through. Usually that annoys me, but Marsh tends to make it work. This time around, it gives us plenty of time to meet all of the guests.
Jonathan Royal is the owner of the country house and the host of the house party. He is rather not a good person. He's invited a group of people who will quite clearly not get along well. The Compline family consists of the mother Sonia and her two sons, William who is excessively devoted and Nicholas, her favorite. William is engaged to another guest, Chloris Wynne, who used to be engaged to Nicholas. Sonia's friend, Hersey Amblington, who owns a spa and...