Jack and Geniuses: At the Bottom of the World

Jack and Geniuses: At the Bottom of the World. Jack and his foster siblings, Ava and Matt, are orphans, but not your typical kind of orphans-they're geniuses. Well, Ava and Matt are, which sometimes makes life difficult for 12-year-old Jack. When the kids try to spy on Dr. Hank Witherspoon, one of the world's leading scientists, they end up working for him in his incredible laboratory.