Hercule Poirot's Christmas by Agatha Christie
The Lee's have gathered at their father's home for Christmas. A millionaire twice over Simon Lee evokes strong passion among-st his children. When Simon lee a day before Christmas announces his desire to change his will to include new members it is evidently not taken well with his family.
While the Lee's are having dinner and coffee downstairs they suddenly hire a blood curling cry from the floor above. They all rush towards their father's chamber but the door is locked from inside. They break down the door and find Mr Lee's throat slit and his blood splattered all over the room.
Luckily Poirot is at hand to help the local police solve the crime.
Review: I have often stated that the best Poirot books are the one's where he works alone where he does not have his Watson around i.e. Arthur Hastings. This one is another example in support of that deduction.