It was only in the Afterwords of this book that I knew that this was first a play written in 1929. At first she faced a negative response from her publisher but she went ahead and it was first performed in 1930. The play was played in the West End and the next year was made into a film. It was only twenty years after the death of Agatha Christie that the play was made into a book.
An urgent call from Sir Claud Amory to Hercule Poirot that someone is trying to steal a formulae - worth a lot of money has him hot foot it to the country estate of Amory. Too late to save him, Hercule Poirot sets off in his inimitable style to find the murderer of the Sir Claud as well as finding the missing document.
I always find Agatha Christie and Hercule Poirot working in tandem with logic and almost step by step follow up of instructions! it seems quite simple at the end of the story as to how their minds work but it is absolutely impossible for anyone else to fathom how these murderers mind's work and even how the murder is attempted.
Wth just a few characters to play around with this is a light hearted read with the usual Poirot flair and poise!