What would happen if Cory Doctorow attempted to rewrite The DaVinci Code? It would probably come out something like this: an odd, quirky bookstore with a mysterious clientele, a secret society, encrypted books promising eternal life, and a bunch of hackers and other 21st-century Talents who can crack it all open. 
 This was a lot of fun, engrossing and clever and mysterious without being all I Am A Mystery! Solve Me!. Great for upper-high school readers who have read either Cory Doctorow or Da Vinci Code, preferably the former because nobody should have to read the latter.