Little Ethan Stacy’s life was torn apart by a divorce in which his mother had run off to Utah to be with Nathan Sloop, a man who has allegedly murdered the boy. His mother, Stephanie Stacy, was described by Joe G. Stacy, the boy’s father, as “unstable” and likely to disappear with the child. Last November, Mr. Stacy informed the court of his fears, but judge Maura T. Smith claims never to have read the filing. Mr. Stacy also said that Ethan had expressed reservations about leaving to visit his mother in Utah. Nevertheless, Mr. Stacy complied with the court...