The Mysterious Moonstone (Key Hunters)

Cleo and Evan have a secret. A collection of books so dangerous they are locked up tight. A friend has vanished inside the pages of one of them. It's up to them to find the key that will set her free.



A PRICELESS DIAMOND...STOLEN!



When Cleo and Evan go undercover to help a rookie detective interview a mansion full of suspects, nothing is as it seems. They must catch the crook -- and find the right key -- or they could be trapped inside this mystery forever...

• The Spy's Secret (Key Hunters)
• The Haunted Howl (Key Hunters #3)
• The Wizard's War (Key Hunters #4)
• The Titanic Treasure (Key Hunters #5)
• The Risky Rescue (Key Hunters #6)
• Battle of the Bots (Key Hunters #7)
• Race the Wild #1: Rain Forest Relay
• Race the Wild #2: Great Reef Games
• Arctic Freeze (Race the Wild #3)
• Tank & Fizz: The Case of the Slime Stampede