Artemis Fowl: The Time Paradox by Eoin Colfer (Paperback)

From New York Times best-selling author, Eoin Colfer, comes book six in the Artemis Fowl series about a teenage criminal mastermind and his siege against dangerous, tech-savvy fairies.

Just when Artemis Fowl decided to forego criminal activity of the magical kind, his mother became gravely ill.
The only way he can save her is by traveling back in time to steal the cure from the clutches of the devious mastermind . . . Artemis Fowl.