On Christmas Eve at Gorston Hall, the Lee family’s festivities are shattered by a deafening crash of furniture and a high-pitched wailing scream. Upstairs—in a locked bedroom—the tyrannical patriarch Simeon Lee lies dead in a pool of blood, his throat slashed.

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, but which one of them turned a special occasion into an occasion for homicide? The suspects will indeed be stirring this Christmas Eve...

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