Both texts examine espionage and secrecy through different perspectives: 'The Dark Game' focuses on personal spy narratives during the American Civil War, while 'The Code Book' provides a broader historical overview of cryptography. Each text has a distinct writing style, with Janeczko using accessible storytelling and Singh employing a more technical, educational approach. Together, they highlight the critical role of communication in historical events.
;
Both texts examine the themes of espionage and secrecy, presenting them through differing historical contexts and narrative styles. The Dark Game personalizes espionage stories, while The Code Book offers a broader educational perspective on codes and their significance. Together, these works highlight the importance of communication in historical events. ;