The Viper's Nest (The 39 Clues, Book 7)

The most dangerous secret in Amy and Dan's past is unveiled in Book 7 of the #1 New York Times bestselling series.

The hunt for 39 hidden Clues that lead to an unimaginable power have taken a heavy toll on fourteen-year-old Amy Cahill and her younger brother, Dan. They've just seen a woman die. They're wanted by the Indonesian police. They're trapped on an island with a man who knows too much about the death of their parents. And a tropical storm is rolling in. Just when they think it can't get any worse, it does. Because the Cahills have one more rattling skeleton for Amy and Dan to discover . . . the terrible truth about their family branch.

• The Emperor's Code (The 39 Clues, Book 8)
• In Too Deep (The 39 Clues)
• Storm Warning (The 39 Clues)
• The Black Circle (The 39 Clues)
• Into the Gauntlet (The 39 Clues)
• Beyond the Grave (The 39 Clues , Book 4)
• Vespers Rising (The 39 Clues, Book 11)
• The Sword Thief (The 39 Clues, Book 3)
• One False Note (The 39 Clues, Book 2)
• The Medusa Plot (The 39 Clues: Cahills vs. Vespers, Book 1)