The Charlie Thorne Complete Paperback Collection (Boxed Set): Charlie Thorne and the Last Equation; Charlie Thorne and the Lost City; Charlie Thorne and the Curse of Cleopatra; Charlie Thorne and the Royal Society

The Charlie Thorne series—which #1 New York Times bestselling author Chris Grabenstein called “a real page-burner”—is now available with all four books in a paperback boxed set!

Charlie Thorne is a genius. Charlie Thorne is a thief. Charlie Thorne isn’t old enough to drive. And now it’s up to her to save the world.

Charlie Thorne is not your average twelve-year-old. Brilliant, adventurous, and defiant, she has been forced to help track down and protect the greatest hidden secrets of mankind:...