Agatha Christie 
The Secret Adversary and The Mysterious Affair at Styles 

Contents:
Preface
The Secret Adversary
The Mysterious Affair at Styles
This version has been optimized for readability and includes:
BEAUTIFUL FORMATTING
There is plenty of white-space which makes reading easy on the eyes.
FULLY FEATURED TABLE OF CONTENTS
The full Table of Contents appears at the beginning of the book and can be accessed through the MENU or GO TO button.
EPUBCHECK
The book successfully passes Epub Check, developed by the IDPF.
The International Digital Publishing Forum (IDPF) is the global trade and standards organization dedicated to the development and promotion of electronic publishing and content consumption.