This book is about the secret history of codes and code-Breaking. it starts with cryptography history from 16th century to present quantum leap in cryptography. It describes cryptography with ease and make you love with the subject. Especially the chapter cracking the enigma gives clear idea how Nazi send the messages through scrambled letters in enigma machine. At the end book , it prescribes further books and website to gain knowledge in cryptography. It also gives basic codes to solve for beginners. This is the book which initiate your thoughts in a different perceptive.