Ben, Zara, Sam, and Marcia begin their summer vacation by helping Professor Ampersand and a new friend build the Silver Turtle, a futuristic airplane, but on th
The take-charge kids from John Fardell’s The 7 Professors of the Far North face a summer packed with danger, excitement and suspense—flying airplanes, scuba
When Sam visits Zara and Ben and their great-uncle, the quirky inventor Professor Ampersand, he never expects to embark on a fantastical adventure. But when Pro