If you received an anonymous message that on Christmas someone will be murdered in the house, never do the following:
— don’t gather the whole family in an old manor house;
— don’t invite friends there. And forbid relatives from doing it too;
— don’t believe in ghosts. Especially those who know about treasures;
— don’t argue with a detective. Even if he’s red-haired and in love;
— not…
Otherwise, everything that happens will be entirely on your conscience.