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Publisher's Summary

The thrilling conclusion to 39 Clues, Part VI: Doublecross.
A Cahill family member from the past is bent on revenge! Confidential until July 2016!
©2016 Sarwat Chadda (P)2016 Scholastic Inc.
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5 out of 5 stars
By newshound on 08-16-16

Best books ever!!!

The narrator was amazing. It keeps you guessing at every turn and makes you feel as though you are watching everything actually happens. I would most definitely recommend it out family has rnjoyed it. And we have read it since the begining of the books!

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