Hercule Poirot's Christmas

It is Christmas Eve. The Lee family reunion is shattered by a deafening crash of furniture, followed by a high-pitched wailing scream. Upstairs, the tyrannical Simeon Lee lies dead in a pool of blood, his throat slashed. But when Hercule Poirot offers to assist, he finds an atmosphere not of mourning, but of mutual suspicion. It seems everyone had their own reason to hate the old man...