The story line is fiction but the famous people said in the story like Mozart or Ben Franklin are real people.
The 39 Clues is a mystery book, but it does have a small degree of fantasy. The formula they are building is supposed to enhance a person's abilities to a superhuman degree.
It is part of the fantasy genre, although some might classify it Adventure or Fantasy-Adventure. Depends on whose classifications you are using.
The name of the 10th 39 clues book is Into The Gauntlet.
there is no 49 clues book it is 39 clues
The title of the seventh 39 clues book is The Viper's Nest. My agent Code is P2J34GKXXP on the 39 clues website.
the name of the 5th 39 clues book is the black circle
The eighth book in The 39 clues series is 'The Emperor's Code.'
The clue is iron salute in book 1 of The 39 Clues.
there is no page clue in 39 clues book 9
Online, the second clue in the 39 clues is hydrogen. But in the second book of the 39 clues is tungsten
Tungsten.
The 39 Clues come with cards.