What are the book card codes in The 39 Clues books?

Answer 1

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Answer 2

In The 39 Clues book series, the book card codes are unique codes found in each book that can be entered online to unlock exclusive content and clues related to the story. These codes are typically hidden within the pages of the book and are used by readers to further engage with the interactive elements of the series. By collecting and entering these codes, readers can uncover additional information and secrets that enhance their reading experience and deepen their understanding of the overarching mystery.

Answer 3

In The 39 Clues book series, each book contains a set of cards that can be used to unlock online missions and clues. The specific card codes are unique to each book and are typically found on the inside of the book jacket or on a separate card within the book. These codes are essential for participating in the interactive online component of The 39 Clues series.

Answer 4

They are codes printed at the bottom of each card that is included with the purchase of each book. The codes connect to the clue presented in each story.

Answer 5

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