Having borrowed this book from my best friend, she recommended it because I want to take my book choices a notch higher. The books that I have been reading mostly fall under YA, and I want to read something more brain-challenging as I am reaching my adult years. :)) 
 The National Security Agency (NSA)'s main function is to break codes to keep the country, and even the global community secure. However, when their reliable code breaking machine encountered a so-called "unbreakable code", the help of senior cryptographer Susan Fletcher was needed. Things got complicated. Many people were involved. Soon Susan discovers that she was betrayed and that she needs to fight for the sake of her country, her life, and her love. 
 Some thoughts: 
 (view spoiler)[1. I was sad that people have died in the story, all because of Strathmore's selfishness. But then, the story definitely would not be worth reading if it had not been that way, right? 
 2. Understanding the text gave me a hard time. Being used to read YA and romance novels, taking this book is a big leap, as I have expected. That is my challenge number 1. Then the second challenge was the fact that I have very few background on codes, encryption, and other related stuff. The terms, the explanation of the processes of TRANSLTR and, other information quite overwhelmed me. 
 3. First thriller ever! The kind of excitement and suspense that I was feeling while reading it was new to me, in a good way. Too bad, I already flipped the remaining chapters while I'm midway. I regret that I did not control myself. :/ 
 4. I wish there is a movie adaptation of this book. The plot combines thriller with little action, which I think will make my heart skip a beat when I see it in the widescreen. ;) (hide spoiler)] 
 Will read it again? Maybe not. As I already know the twists, there will be no excitement into it anymore. But I will surely read another Dan Brown book :D