Book Series · 4 Books
In order from Mission Titanic to Mission Atomic. Part of The 39 Clues.
A powerful family faces betrayal and danger. Can they survive?
4 books · Published 2015–2016
A powerful family faces betrayal and danger. Can they survive?
A mysterious foe recreates history's worst disasters. Can the Cahills stop him in time?
Siblings race against time to stop a relative from unleashing a man-made hurricane disaster.
A vengeful figure threatens global disaster. Can two siblings stop him in time?
There are 4 books in the 39 Clues: Doublecross series. It began with Mission Titanic in 2015, and the newest book, Mission Atomic, was published in 2016.
Start with Mission Titanic and follow the series order — the books above are numbered #1 through #4.
The series is best for ages 8–12, based on the age ranges of the individual books.
The authors and illustrators who bring The 39 Clues: Doublecross to life.
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