Alex Selky, going on seven, kissed his mother goodbye and set off for school, a mere two blocks away. He never made it. Desperate to find him, his mother begins a vigil that lasts for days, then weeks, then months. She is treated first as a tragic figure, then as a grief-crazed hysteric, then as anreminder of the bad fortune that can befall us all. Against all hope, despite false leads and thedesertions of her friends and allies she believes with...