This book consists of articles from Wikia or other free sources online. Pages: 38. Chapters: Agent Cards, Aloe, Anastasia Romanov, Boys' Life Cards, Cahill Commotion, Cahills vs.Vespers, Card 26, Card Chart, Card Combos, Card Packs, Charlie Wallace, Cheyenne Wyoming, Dan Cahill, David Livingstone, Double Cross, HALO, In Too Deep, Iron Solute, Katherine Cahill, Lan Nguyen, Lily, Luke Cahill, Mace, Madeleine Cahill, Master Serum, My Cards, My Clues, Myrrh, Natalie Kabra, Platinum, Reagan Holt, Replicator Cards, Salt, Sharable Card Codes, Silk, Storm Warning, The 39 Clues Website, The Bermuda Triangle, The Dead Of Night, The Jefferson Puzzle, The Sword Thief, The Viper's Nest, Top Secret Cards, Vesper Five, Vesper One, Vespers Rising. Excerpt: Agent Cards are cards that readers can make online, and share with other players. A code is generated that can be added like other cards. You can have an Agent Card by creating an account in The 39 Clues Website. Once you have logged in, you can go to the "Agent Card" section and decorate your card. When you move up a level or rank, you can get more things to decorate your Agent Card. This is the only step that cannot be undone or redone. You make an alias by choosing the words you'd like out for your alias name and a number is added according to when you did it (Ex: if you are the 5 person to do "AdmiralChipher" then you will be "AdmiralChipher5."). The back can occupy up to 20 medals in a 4x5 grid and also has the achievements of the agent listed at the top. They are currently updating the back, and it is disabled for now. Cards are shared in various ways, the two main ways being sending to friends who are also agents or publishing them on the internet anywhere possible. Most people will post on places relevant to the hunt, such as on questions on services like WikiAnswers or Yahoo Answers or forums with a 39 Clues section. Here is an example that works: P4G4MPNNXP. (see below for more agent card codes) Below, are codes...