Hercule Poirot’s Christmas by Agatha Christie
When will these older, wealthy men stop inviting their whole families, most of whom hate them or each other, to Christmas house parties? Simeon Lee is the one who's done it this time. All his children, a grandchild none of the others know, and an old "friend's" son, are at the house for Christmas and of course Simeon Lee ends up dead, killed in a locked room. There are plenty of motives, although how was he killed is a good question.
The killer was a surprise to me. I'm not sure we really had enough clues to guess who it was on our own. But it's a good ending. I do love Christie.
I also listened to this short story. It's another Christmas only this time, Poirot already knows what the crime was, a stolen gem. It's his job to track it down. But he also learns how enjoyable an English Christmas can be. There's no actual murder in this one, which...