The 39 Clues: Unstoppable Book 4: Flashpoint
(The 39 Clues #15)
by Gordon Korman

• Publication Date: August 26, 2014
• Genres: Children's, Fiction, Mystery, Suspense, Youth Fiction
• Hardcover: 224 pages
• Publisher: Scholastic Inc.
• ISBN-10: 0545521475
• ISBN-13: 9780545521475