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Extended Audio Sample Digital Fortress: A Thriller Audiobook, by Dan Brown Click for printable size audiobook cover
3 out of 53 out of 53 out of 53 out of 53 out of 5 3.00 (186,889 ratings) (rate this audio book) Author: Dan Brown, Paul Michael Narrator: Paul Michael Publisher: Macmillan Audio Format: Unabridged Audiobook Delivery: Instant Download Audio Length: Release Date: June 2004 ISBN: 9781593975647
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A masterful thriller by the author of the #1 New York Times bestseller The Da Vinci Code
When the NSA's invincible code-breaking machine encounters a mysterious code it cannot break, the agency calls its head cryptographer, Susan Fletcher, a brilliant, beautiful mathematician. What she uncovers sends shock waves through the corridors of power. The NSA is being held hostage—not by guns or bombs—but by a code so complex that if released would cripple U.S. intelligence. Caught in an accelerating tempest of secrecy and lies, Fletcher battles to save the agency she believes in. Betrayed on all sides, she finds herself fighting not only for her country but for her life, and in the end, for the life of the man she loves.

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Quotes & Awards

  • “Dan Brown has to be one of the best, smartest, and most accomplished writers in the country. The Da Vinci Code is many notches above the intelligent thriller; this is pure genius. NELSON DeMILLE, #1 New York Times bestselling author

  • Intrigue and menace mingle in one of the finest mysteries I've ever read. An amazing tale with enigma piled on secrets stacked on riddles. CLIVE CUSSLER, #1 New York Times bestselling author
  • The Da Vinci Code is a dazzling performance by Brown, a delightful display of erudition. The Boston Globe

Listener Opinions

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 Aquib | 2/20/2014

    " Typical Dan Brown style story with lots of twists and turns. I didn't like the setting too much though. Probably because a lot of the facts were incorrect as per my knowledge; and I'm an IT professional. And the writing style didn't actually 'take me there' in the story like a good book would. It was OK; not THAT good. "

  • 4 out of 54 out of 54 out of 54 out of 54 out of 5 Fi | 2/20/2014

    " I liked it. The riddle posed close to the end of the book was truly simple. I am dyslexic, and seriously math challenged, and I worked it out long before these so called genius characters did...so that seemed a bit (o.k. immensely) weak to me. But on the whole, even though I did figure out most of the plot, I enjoyed seeing how things would unfold. I find Mr. Brown's books to be somewhat formulaic, but entertaining none the less. It was a fun, quick read. "

  • 2 out of 52 out of 52 out of 52 out of 52 out of 5 Kamal | 2/18/2014

    " Huge disappointment. Almost gave up half way. Gave 2 stars, coz I never give 1. "

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 Edward | 2/6/2014

    " As a technology professional, these types of books have a high standard to reach to make it past three stars. In short, the story is predictable. There is enough action going on to keep me turning the pages but in the end it was not far off from my conclusion. I did like how it was fairly thin on characters but did a good job with what was offered. "

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 Jonathon Cody | 2/4/2014

    " This is my fourth Dan Brown book, and lets just say I had the overwhelming feeling that I have read this book before. Needless to say the plot and story line is the same in this book as in Angles & Demons, The Lost Symbol, etc. I feel that the order in which you read his books will ultimately figure into your own rating of them. The story was compelling but the twists and turns were all to predictable. I did find the ending enjoyable but as a whole the book was average. Reading between the lines you can see the beginning of the development of Robert Langdon and the future adventures he would embark on. "

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 Kyle | 2/3/2014

    " Yes, I read all the Dan Brown books up to Da Vinci Code. I was young and silly and they were quick reads. Don't judge me. "

  • 5 out of 55 out of 55 out of 55 out of 55 out of 5 Shari Ludy | 1/30/2014

    " Exciting technological thriller! Dan Brown strikes again! "

  • 4 out of 54 out of 54 out of 54 out of 54 out of 5 Rahul | 1/27/2014

    " I wanted this book to go on. "

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 Malithsen | 1/16/2014

    " This book lacks the suspense which Dan Brown had in his other four books. It was predictable right through to the end. "

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 Cecilia | 1/15/2014

    " Not as good as Angles & Demons or the da Vinci code. Good enough though. "

  • 5 out of 55 out of 55 out of 55 out of 55 out of 5 Huda | 12/15/2013

    " Fantastic from start to finish - LOVED it. "

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 Carol Hawkins | 11/23/2013

    " Another Dan Brown. Easy read, intrigue and mystery. Expected angst against religion or more precise Catholic Religion. "

  • 4 out of 54 out of 54 out of 54 out of 54 out of 5 Sean Elvidge | 10/23/2013

    " Less famous than the Da Vinci Code and Angels & Demons this Dan Brown book does not follow the adventures of Robert Langdon. Written in the same style as the others, if you like Dan Brown's work then you'll like this, if you don't then you won't. "

  • 1 out of 51 out of 51 out of 51 out of 51 out of 5 Walton | 10/1/2013

    " I used to think The Da Vinci Code was the worst book ever written. Now I know this is. "

  • 5 out of 55 out of 55 out of 55 out of 55 out of 5 Fernando | 7/20/2013

    " Great book!! Never disapointed by dan brown "

  • 4 out of 54 out of 54 out of 54 out of 54 out of 5 Vijay Bhaskar | 6/26/2013

    " Master class thriller.Climax could've been a bit more Gripping. "

  • 5 out of 55 out of 55 out of 55 out of 55 out of 5 Boitumelo Crypto | 6/2/2013

    " Dan brown outdone himself again, and it shows how we are dependent on technology and the secret matemetics that protects our money and true identities "

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 Toby | 5/10/2013

    " Classic techno-thriller. Long on thrills, short on substance. I don't know a lot about cryptography, but I'm sure that just as much of this book was total BS as was The Da Vinci Code, but it was a ton of fun! Fast paced brain candy! "

  • 1 out of 51 out of 51 out of 51 out of 51 out of 5 Courtney Yeager | 5/9/2013

    " The public library's selection of audiobooks is wanting, but we needed something for our 17-hour road trip. Terrible book, brimming with cliches. I recall liking The Da Vinci Code, but I was also in high school when I read it. I won't be reading/listening to Dan Brown books again. "

  • 2 out of 52 out of 52 out of 52 out of 52 out of 5 Brandie | 4/2/2013

    " Okay, seriously ... all I can say is after reading this book, I realize why he wasn't famous until DaVinci Code. I didn't really like it. It was boring, predictable and I apparently can figure things out much faster than top NSA agents. "

  • 5 out of 55 out of 55 out of 55 out of 55 out of 5 Joshua Altemoos | 3/14/2013

    " It is a great tech novel that is an great read for any one with any computer background or just NSA/spy die hards. I fall into both areas so I love it. "

  • 5 out of 55 out of 55 out of 55 out of 55 out of 5 Holzster | 1/19/2013

    " Good book but the Tech writing in this book is bad. LOTS of stuff wrong. If you are not a Tech then you will like it more "

  • 2 out of 52 out of 52 out of 52 out of 52 out of 5 Michelle Howa | 10/24/2012

    " My least favorite Dan Brown book. "

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 Amy Beaton | 9/11/2012

    " It's not literature but it is entertaining "

  • 2 out of 52 out of 52 out of 52 out of 52 out of 5 Robert | 2/16/2012

    " Not bad, however, not in the same realm as the DaVinci Code and Angels & Demons. I liked the idea behind the book, but it just didn't have the same thrills as his later books. "

  • 4 out of 54 out of 54 out of 54 out of 54 out of 5 Eamarie | 1/30/2012

    " A page-turner. This book will definitely give you a taste of what it is like in the world of 'Intelligence', all the while feeding you with information on other aspects such as history and business perspectives. "

  • 5 out of 55 out of 55 out of 55 out of 55 out of 5 Pallavi Ivashkov | 11/17/2011

    " Dammit I figured out most of it so darn early! And I hate it because all the way through the book I was like 'come on Susan don't u still get it!' "

  • 5 out of 55 out of 55 out of 55 out of 55 out of 5 Paul Swaby | 7/28/2011

    " Mr Brown never fails to deliver. "

  • 5 out of 55 out of 55 out of 55 out of 55 out of 5 Rony | 6/25/2011

    " An exhilarating journey into the secret world of cryptographers which keeps you on the edge of your seat and you cant leave the book till one has finished it.. Dan Brown proves why he is a master of mystery!! "

  • 4 out of 54 out of 54 out of 54 out of 54 out of 5 Krista | 6/22/2011

    " For a generally good book, I think it had a whole lot more potential than was brought forth. Dan Brown is a great story teller, but he needs to expand his horizons a little more. Just feels like a cookie-cutter author (though I love the shape he uses for his books). "

  • 2 out of 52 out of 52 out of 52 out of 52 out of 5 Stephanie | 6/22/2011

    " See my review for Deception Point. "

  • 4 out of 54 out of 54 out of 54 out of 54 out of 5 Mhay | 6/20/2011

    " This is the first Dan Brown novel I've read and if you haven't read some of his books you will never know his writing style. This is a good book. Godd for information and sources. Lots of secrets and everything. "

  • 5 out of 55 out of 55 out of 55 out of 55 out of 5 Niamh | 6/20/2011

    " This book was amazing.
    First time I have read a book by this author.
    It was seriously addictive and completely unpredictable. Its full of action and full of surprises. It's a great book and Dan Brown is an amazing author. It's made me want to read other books by him.
    "

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 Planetcall | 6/16/2011

    " A very nice story. Won't say it didn't have glitches which were obvious to a computer professional but still an interesting read indeed. The plot of the story was beautiful. "

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 TL | 6/14/2011

    " I really couldn't get into the code breaking thing, but the story was interesting and although it was almost Cookie Cutter story development compared to Deception Point, I still finished the book and enjoyed it enough to not be disappointed at the finale. "

  • 3 out of 53 out of 53 out of 53 out of 53 out of 5 Erica | 6/13/2011

    " not as good as dan's other books. still kept me reading. If you havent read all of the dan brown books, they are good summer/beach reading. "

  • 5 out of 55 out of 55 out of 55 out of 55 out of 5 Kelly | 6/13/2011

    " A lot of the computer stuff went over my head....(not my area of expertise!). but another good read by Dan......lots of suspense and action... "

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About the Author
Author Dan Brown

Dan Brown is the author of numerous #1 bestselling novels, including The Da Vinci Code, which has become one of the bestselling novels of all time. Brown’s novels have been published in fifty-two countries with 200 million copies in print. Brown was named one of Time magazine’s 100 Most Influential People in the World in 2005. The Da Vinci Code was made into a major motion picture in 2006; it was the second highest grossing film of the year. A film adaptation of Angels & Demons was released in 2009, and an adaptation of a third novel, The Lost Symbol, is set to release in 2012. A graduate of Amherst College, Brown lives in New England with his wife.

About the Narrator

Paul Michael is an Audie Award-winning narrator. He has acted on stage, radio, television, and in feature films in Canada, Great Britain, and the United States. He has had leading roles in series and made-for-television movies and has guest starred in such series as VIP and Alias. He has been nominated for a Canadian Emmy (or Nellie) and has recorded over 150 audiobooks, including the international bestseller The Da Vinci Code, winning more than a dozen AudioFile Earphones Awards.