Countdown (PDF) – The 39 Clues: Unstoppable #3

First released in 2014, Countdown is an adventurous young adult novel written by Natalie Standiford. It is the 3rd and penultimate book in The 39 Clues: Unstoppable series, the third story arc of The 39 Clues Franchise.

In their quest to find the ingredient of Cahill super serum, Amy and Dan Cahill find what could be their biggest challenge in Guatemala. Previously, Dan can always anticipate his enemies’ movement but this time, it somehow eludes him. Now his fate is hanging by a thread, between life and death. To save his little brother, Amy will have to make the most fatal but important decision. A decision that may claim her life.

The book is preceded by Breakaway and followed by Flashpoint.

You can get the other books of The 39 Clues: Unstoppable series here.

Cover and Details of Countdown (PDF)

cover of 39 clues unstoppable 3 countdown pdf

  • Title: Countdown
  • Author:
  • Publisher: Scholastic Inc.
  • Date Published: May 1, 2014
  • Language: English
  • ISBN-10: 0545521459
  • ISBN-13: 9780545521451

Summary of the Book

Media tycoon and presidential candidate J. Rutherford Pierce has set his sights on destroying the siblings. And after numerous close calls, it looks like he’s about to get his wish. Now Dan is hopelessly trapped and nothing can save him. Nothing except unleashing an evil the Cahills have spent centuries trying to hide. The Cahills have always had a secret weapon, but it comes at a great cost. With everything to lose, Amy has to ask herself the question that haunts her nightmares: Just how far is she willing to go to save her little brother?

Reviews of Countdown

Excellent! I know these books were written for teens & I only started reading the first one because my daughter downloaded them to my kindle to read….BUT I am hooked! They are well written, suspenseful, exciting & I keep downloading the next one! Thank you for hours of enjoyable entertainment! (by JOAN,

Links To Download the eBook pdf File

Use the links below to download The 39 Clues: Unstoppable #3 – Countdown PDF:

Link 1 Link 2

To learn on How To Download the eBook PDF files, check this post.

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Countdown (PDF) – The 39 Clues: Unstoppable #3
Article Name
Countdown (PDF) – The 39 Clues: Unstoppable #3
The 39 Clues: Unstoppable #3 - Countdown (PDF). An adventure young-adult novel by Natalie Standiford. Amy and Dan find their biggest challenge in Guatemala. Dan's fate is between life and death. Amy will have to make a decision that may claim her life.
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