From New York Times bestselling author Stuart Gibbs comes a thrilling new series about an unbelievable twelve-year-old genius who uses her skills as an operative for the CIA.
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“Fast-paced, smart, and action-packed...a real page-burner.” —Chris Grabenstein, #1 New York Times bestselling author of the Mr. Lemoncello’s Library series From New York Times bestselling author Stuart Gibbs comes the first n... SEE MORE