The Mysterious Affair at Styles is a detective novel by British writer Agatha Christie. It was written in the middle of the First World War, in 1916, and first published 1920. … (For £25. After all, she was only a woman 😀)
It introduced Hercule Poirot …
… was well received by reviewers in the UK and the US at initial publication. …
Agatha was influenced by the Sherlock Holmes books, for sure. Narrator Hastings – Poirot’s friend, really reminded me of Watson. Like Watson, he was injured in the war.
This book is skillfully written. I enjoyed it.

Guinness World Records lists Christie as the best-selling fiction writer of all time, her novels having sold more than two billion copies.
In 1955, Christie was the first recipient of the Mystery Writers of America‘s Grand Master Award.