Poirot is looking forward to Christmas on his own, but when the nation's security is threatened, the Foreign Office have a rather different interpretation of Season's Greetings.

Agatha Christie certainly knew the power of a Christmas Whodunnit, with several Poirot and Miss Marple stories set during the holiday season, and she wasn't the only crime author to tap into the ...

Poirot investigates the death of a man found murdered with a love letter in his pocket, but things are made more complicated by a smug French detective determined to compete.