Shatterproof (The 39 Clues

Vesper One commands Dan and Amy Cahill to steal the Golden Jubilee, one of the world's largest diamonds, but what they do not know is that the Jubilee theft is just a setup and someone is going to die. After pulling some spectacular heists, Amy and Dan have become two of Interpol's most wanted criminals. When Vesper One orders them to steal the world's largest diamond, they know they're facing life in prison or worse. Book #4