The books on this list are the kind that tickle the brain and delight the mind. Puzzles, mysteries, engineering, and the like. These books are the kind that satisfy that brainy reader.

The Westing Game
The Mysterious Benedict Society
The Mad Scientists Club
Henry Reed, Inc
Danny Dunn and the Anti Gravity Paint
The Marvelous Inventions of Alvin Fernald
Chitty Chitty Bang Bang
Growly: Begin
Twenty One Balloons
Dinotopia
Who Walks the Attic?