No one is safe. No one can be trusted.
In The 39 Clues: Cahills vs. Vespers Book Four – Shatterproof by Roland Smith, the tension explodes as Amy and Dan Cahill race across Europe, desperate to meet the impossible demands of the Vespers, a shadowy organization threatening to destroy their family. Every mission is more dangerous than the last — and one small mistake could mean the end of everything.

This time, the Cahills must travel to Germany, Prague, and beyond, facing coded messages, deadly traps, and heartbreaking betrayals. As the stakes rise, Amy and Dan begin to realize that the real battle isn’t just about saving their relatives — it’s about uncovering the truth behind the Vespers’ ultimate plan.

Written by Roland Smith, bestselling author of Peak and Storm Runners, Shatterproof delivers nonstop action, suspense, and emotional intensity. Combining spy thriller energy with historical intrigue and global adventure, this gripping installment of The 39 Clues: Cahills vs. Vespers series pulls readers deeper into a dangerous conspiracy where loyalty is fragile and every clue could be a trap.

Perfect for fans of Rick Riordan, James Dashner, and Gordon Korman, this book keeps readers guessing at every turn — proving once again that in the world of the Cahills, nothing is unbreakable.

PUBLISHER: SCHOLASTIC INC.

BINDING:HARD COVER

LANGUAGE: ENGLISH

PAGES: 190

CARD : MISSING