Once upon a time, a boy named Jacob lived in a world of knights and dragons-when he wasn't going to first grade, learning manners and waltzes, and eating steak tartare. While his parents' careers keep them occupied, he befriends the large and rambunctious family next door and explores his new home-the Summit Hill mansion of a 19th century railroad baron. Jacob is used to battling dragons. But even he is surprised to discover a man living in...