Poirot | - The Mysteri...

First published in 1920, the novel was reportedly written as the result of a bet that Christie could not write a mystery where the reader would be unable to guess the killer.

: 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.

The film version starring David Suchet is noted for its extreme fidelity to the source material while making specific thematic choices. 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.

: Considered one of Christie's most brilliant poisonings, it involves a complex chemical reaction in a bottle of medicine that ensures the strychnine is only effective in the very last dose. The 1990 TV Adaptation First published in 1920, the novel was reportedly

“It was a joy to see his portrayal of the famed detective's first case... the character as portrayed by Suchet was still being developed, so there are a few minor differences.” IMDb

To see how the 1990 film adaptation compares to the original debut novel, you can watch this breakdown of the key changes and highlights: : It provides a more poignant look at

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