I'm a huge fan of Agatha Christie, and I've read almost all of her books more than once. I love Miss Marple and Tommy and Tuppence. Hercule Poirot is okay, but he can be annoying. I say that I've read almost all of her books because I don't remember reading The Big Four. This is a book copyrighted from 1927, but it's actually a collection of 12 short stories that were published in The Sketch magazine. Hercule Poirot learns of a criminal organization called the Big Four. The four are a Chinese man, a French scientist, an American millionaire, and a mysterious British man. Hercule Poirot figures out who the first three members of the Big Four are and spends most of the book trying to figure out who is the mysterious fourth member. Of course, the Big Four do everything they can to remove Poirot from their trail.
So what did I think of the book? It was interesting. Agatha Christie was good at making a connection between a collection of short stories. She did it with The Thirteen Problems, The Labors of Hercules, and Partners in Crime. The individual mysterious were intriguing and quite puzzling. Captain Hastings is back to help Poirot with the mystery. The book is a very quick, short read, although it wasn't very easy to find. My library only had a few copies; so if you can find it, give it a try.