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Mr. Penumbra's 24-Hour Bookstore (Mr. Penumbra's 24-Hour Bookstore, #1) Mr. Penumbra's 24-Hour Bookstore (Mr. Penumbra's 24-Hour Bookstore, #1)
by (shelved 25 times as codes)
avg rating 3.72 — 219,703 ratings — published 2012
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Mother Night Mother Night (Paperback)
by (shelved 16 times as codes)
avg rating 4.24 — 113,203 ratings — published 1962
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The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography The Code Book: The Science of Secrecy from Ancient Egypt to Quantum Cryptography (Paperback)
by (shelved 14 times as codes)
avg rating 4.30 — 29,749 ratings — published 1999
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Digital Fortress Digital Fortress (Paperback)
by (shelved 12 times as codes)
avg rating 3.71 — 675,573 ratings — published 1998
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The Da Vinci Code (Robert Langdon, #2) The Da Vinci Code (Robert Langdon, #2)
by (shelved 10 times as codes)
avg rating 3.94 — 2,596,498 ratings — published 2003
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The Rose Code The Rose Code (Paperback)
by (shelved 7 times as codes)
avg rating 4.43 — 415,205 ratings — published 2021
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Book Scavenger (Book Scavenger, #1) Book Scavenger (Book Scavenger, #1)
by (shelved 6 times as codes)
avg rating 4.13 — 18,379 ratings — published 2015
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The Bletchley Riddle The Bletchley Riddle (Hardcover)
by (shelved 4 times as codes)
avg rating 4.10 — 17,781 ratings — published 2024
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Enigma Girls: How Ten Teenagers Broke Ciphers, Kept Secrets, and Helped Win World War II Enigma Girls: How Ten Teenagers Broke Ciphers, Kept Secrets, and Helped Win World War II (Hardcover)
by (shelved 4 times as codes)
avg rating 4.04 — 4,134 ratings — published 2024
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Look Into My Eyes (Ruby Redfort, #1) Look Into My Eyes (Ruby Redfort, #1)
by (shelved 4 times as codes)
avg rating 4.23 — 9,092 ratings — published 2011
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Cryptonomicon Cryptonomicon (Mass Market Paperback)
by (shelved 4 times as codes)
avg rating 4.23 — 118,972 ratings — published 1999
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The Twyford Code The Twyford Code (Paperback)
by (shelved 3 times as codes)
avg rating 3.58 — 36,501 ratings — published 2022
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Enigma Enigma (Mass Market Paperback)
by (shelved 3 times as codes)
avg rating 3.91 — 19,645 ratings — published 1995
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A Girl Named Digit (Digit, #1) A Girl Named Digit (Digit, #1)
by (shelved 3 times as codes)
avg rating 3.85 — 5,865 ratings — published 2012
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Ready Player One (Ready Player One, #1) Ready Player One (Ready Player One, #1)
by (shelved 3 times as codes)
avg rating 4.22 — 1,354,118 ratings — published 2011
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The Lost Symbol (Robert Langdon, #3) The Lost Symbol (Robert Langdon, #3)
by (shelved 3 times as codes)
avg rating 3.77 — 677,930 ratings — published 2009
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The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet (Hardcover)
by (shelved 3 times as codes)
avg rating 4.18 — 1,525 ratings — published 1967
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Mr. Lemoncello's All-Star Breakout Game (Mr. Lemoncello's Library, #4) Mr. Lemoncello's All-Star Breakout Game (Mr. Lemoncello's Library, #4)
by (shelved 2 times as codes)
avg rating 4.22 — 4,243 ratings — published 2019
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Mr. Lemoncello's Very First Game (Mr. Lemoncello's Library) Mr. Lemoncello's Very First Game (Mr. Lemoncello's Library)
by (shelved 2 times as codes)
avg rating 4.26 — 1,775 ratings — published 2022
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Mr. Lemoncello's Library Olympics (Mr. Lemoncello's Library, #2) Mr. Lemoncello's Library Olympics (Mr. Lemoncello's Library, #2)
by (shelved 2 times as codes)
avg rating 4.20 — 15,720 ratings — published 2016
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Mr. Lemoncello's Great Library Race (Mr. Lemoncello's Library, #3) Mr. Lemoncello's Great Library Race (Mr. Lemoncello's Library, #3)
by (shelved 2 times as codes)
avg rating 4.20 — 7,416 ratings — published 2017
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Mr. Lemoncello and the Titanium Ticket (Mr. Lemoncello's Library, #5) Mr. Lemoncello and the Titanium Ticket (Mr. Lemoncello's Library, #5)
by (shelved 2 times as codes)
avg rating 4.28 — 2,641 ratings — published 2020
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The Berlin Letters The Berlin Letters (Paperback)
by (shelved 2 times as codes)
avg rating 4.17 — 10,220 ratings — published 2024
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The Inheritance Games (The Inheritance Games, #1) The Inheritance Games (The Inheritance Games, #1)
by (shelved 2 times as codes)
avg rating 4.12 — 1,170,065 ratings — published 2020
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The Hawthorne Legacy (The Inheritance Games, #2) The Hawthorne Legacy (The Inheritance Games, #2)
by (shelved 2 times as codes)
avg rating 4.18 — 678,858 ratings — published 2021
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Rescue Rescue (Hardcover)
by (shelved 2 times as codes)
avg rating 4.28 — 5,573 ratings — published 2021
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The Woman Who Smashed Codes: A True Story of Love, Spies, and the Unlikely Heroine who Outwitted America's Enemies The Woman Who Smashed Codes: A True Story of Love, Spies, and the Unlikely Heroine who Outwitted America's Enemies (Hardcover)
by (shelved 2 times as codes)
avg rating 4.09 — 24,656 ratings — published 2017
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Coding for Kids: Python: Learn to Code with 50 Awesome Games and Activities Coding for Kids: Python: Learn to Code with 50 Awesome Games and Activities (Kindle Edition)
by (shelved 2 times as codes)
avg rating 4.28 — 133 ratings — published
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Code Girls: The Untold Story of the American Women Code Breakers Who Helped Win World War II Code Girls: The Untold Story of the American Women Code Breakers Who Helped Win World War II (Hardcover)
by (shelved 2 times as codes)
avg rating 3.96 — 31,644 ratings — published 2017
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Origin (Robert Langdon, #5) Origin (Robert Langdon, #5)
by (shelved 2 times as codes)
avg rating 3.90 — 385,348 ratings — published 2017
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The Givenchy Code (Codebreaker Trilogy, #1) The Givenchy Code (Codebreaker Trilogy, #1)
by (shelved 2 times as codes)
avg rating 3.60 — 1,388 ratings — published 2005
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Rose Labyrinth Rose Labyrinth (Hardcover)
by (shelved 2 times as codes)
avg rating 2.91 — 3,727 ratings — published 2008
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The Forbidden Stone (The Copernicus Legacy, #1) The Forbidden Stone (The Copernicus Legacy, #1)
by (shelved 2 times as codes)
avg rating 3.85 — 3,002 ratings — published 2014
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Escape from Mr. Lemoncello's Library (Mr. Lemoncello's Library, #1) Escape from Mr. Lemoncello's Library (Mr. Lemoncello's Library, #1)
by (shelved 2 times as codes)
avg rating 4.11 — 64,131 ratings — published 2013
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The Blackthorn Key (The Blackthorn Key, #1) The Blackthorn Key (The Blackthorn Key, #1)
by (shelved 2 times as codes)
avg rating 4.16 — 14,985 ratings — published 2015
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The Secrets of Codes: Understanding the World of Hidden Messages The Secrets of Codes: Understanding the World of Hidden Messages (Paperback)
by (shelved 2 times as codes)
avg rating 4.00 — 33 ratings — published 2009
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The Supernatural Enhancements The Supernatural Enhancements (Hardcover)
by (shelved 2 times as codes)
avg rating 3.63 — 7,864 ratings — published 2014
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Secret Language: Codes, Tricks, Spies, Thieves, and Symbols Secret Language: Codes, Tricks, Spies, Thieves, and Symbols (Hardcover)
by (shelved 2 times as codes)
avg rating 3.27 — 49 ratings — published 2010
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S. S. (Hardcover)
by (shelved 2 times as codes)
avg rating 3.85 — 30,242 ratings — published 2013
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The Book of Blood and Shadow The Book of Blood and Shadow (Library Binding)
by (shelved 2 times as codes)
avg rating 3.55 — 5,315 ratings — published 2012
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Codex Codex (Unknown Binding)
by (shelved 2 times as codes)
avg rating 3.05 — 9,139 ratings — published 2004
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The Secret of Red Gate Farm (Nancy Drew Mystery Stories, #6) The Secret of Red Gate Farm (Nancy Drew Mystery Stories, #6)
by (shelved 2 times as codes)
avg rating 3.90 — 16,718 ratings — published 1931
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The Mysterious Benedict Society (The Mysterious Benedict Society, #1) The Mysterious Benedict Society (The Mysterious Benedict Society, #1)
by (shelved 2 times as codes)
avg rating 4.20 — 180,758 ratings — published 2007
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Simple Genius (Sean King & Michelle Maxwell, #3) Simple Genius (Sean King & Michelle Maxwell, #3)
by (shelved 2 times as codes)
avg rating 4.05 — 53,966 ratings — published 2007
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Between Silk and Cyanide: A Codemaker's War, 1941-1945 Between Silk and Cyanide: A Codemaker's War, 1941-1945 (Paperback)
by (shelved 2 times as codes)
avg rating 4.25 — 2,743 ratings — published 1998
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Art Attack (The Sherlock Society) Art Attack (The Sherlock Society)
by (shelved 1 time as codes)
avg rating 4.39 — 418 ratings — published
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The Temple Keep The Temple Keep (Hardcover)
by (shelved 1 time as codes)
avg rating 3.85 — 44 ratings — published
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Salakirjoitustaidon perusteet Salakirjoitustaidon perusteet (Hardcover)
by (shelved 1 time as codes)
avg rating 3.00 — 1 rating — published
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Gift Gugu Mona
“There are codes for dominion in the Word of God. Those who read it as if they have no choice find their voice.”
― Gift Gugu Mona, The Infallible Word of God: 365 Inspirational Quotes

Christina Engela
“The machine demanded access codes. As he entered the first, a faint whispering sound startled him, causing him to snatch up the sweep laser. All was silent again. It had sounded like metal on metal. Could he have imagined it? He listened intently.”
― Christina Engela, Demonspawn

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