Tonight on AC360°, Gary Tuchman investigates the death of a young girl who was found naked in her backyard. Authorities say she suffered beatings, starvation and confinement for days at the hands of her adoptive parents. They are charged in connection with her death, and and investigators are looking into whether their brutal treatment of Hana was inspired by a book that encourages parents to punish their children “Biblically.” Tune in at 8 p.m. ET for the complete “Ungodly Discipline” story.