Cover art for The 39 Clues: Unstoppable, Book 3

The 39 Clues: Unstoppable, Book 3

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Summary

The 39 Clues is unstoppable! The best-selling series returns with an adventure spanning four explosive volumes and a website that places listeners right in the action.

©2014 Natalie Standiford (P)2014 Scholastic Inc.

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