The Secret Adversary: A Brilliant Story Of Mystery Detective (annotated) By Agatha Christie.

In Her First Published Mystery, Agatha Christie Introduces Readers To The Heroic Detective, Hercule Poirot. This Is A Classic Murder Mystery Set In The Outskirts Of Essex. The Victim Is The Wealthy Mistress Of Styles Court. The List Of Suspects Is Long And Includes Her Gold-digging New Spouse And Stepsons, Her Doctor, And Her Hired Companion.