(From the publisher):
Sam, Zara and Ben never expected their vacation to turn into a life-or-death rescue mission. But when Uncle Ampersand is kidnapped by the nefarious Professor Murdo, the three children must race to the Arctic to save him. Numerous twists and turns put them to the test as they decode encrypted messages, navigate secret passages, scale giant buildings and hurtle overóand underódangerous ice fields, all the while unsure of whom they can trust. And when they finally discover Murdoís ultimate plan, they come to a startling realization: Itís not just Ampersandís fate on their shoulders...itís the fate of the whole world.
Original title: The Seven Professors of the Far North
Genre: Fiction→ Children & Young Adult→ Adventure