This was the first book Agatha Christie wrote. I think it is a solid book with a good plot. It deals with poison and inheritance of a will. There are several suspects (as any other book) and everyone has a motif. Well one part of the crime anyone can discover (I think) and the other we never saw it coming. This book deals with Double Jeopardy. It says the same person can't be prosecuted by the same crime twice. In the end I was satisfied and I think it was a good book.