In a crumbling, isolated house at the foot of Mount Kanchenjunga in the Himalayas lives an embittered judge who wants only to retire in peace, when his orphaned granddaughter, Sai, arrives on his doorstep. The judge’s cook watches over her distractedly, for his thoughts are often on his son, Biju, who is hopscotching from one gritty New York restaurant to another. Kiran Desai’s brilliant no…