Mysteri... | Poirot - The

: The story is told through the eyes of Captain Arthur Hastings, who returns from World War I to stay at Styles Court and acts as the "outsider" perspective for the reader.

: Unlike other Poirot episodes that were shifted to the 1930s, this adaptation stayed true to the 1917 setting to capture the atmosphere of World War I. Poirot - The Mysteri...

: It provides a more poignant look at Hastings' post-war trauma (the "thousand-yard stare") which was less emphasized in the book. : The story is told through the eyes

: It famously uses floor plan diagrams and in-text evidence (like chemical prescriptions) to help readers follow the investigation like a game of Clue. Poirot - The Mysteri...