Susan Cushing asks Holmes' help in solving the disappearance of her sister Mary Browner, but it doesn't seem Holmes' type of case until he is told of a Christmas present's grisly contents.
Susan Cushing demana l'ajuda d'Holmes per resoldre la desaparició de la seva germana Mary Browner, però no sembla el cas d'Holmes fins que se li parla del contingut espantós d'un regal de Nadal.
