What do you do with a 14-year-old who murders another child? That question lies at the heart of a new book, A Murder Over a Girl. It’s about a case in Oxnard eight years ago. Fourteen-year-old Brandon McInerney murdered one of his classmates, Larry King. The trial wasn’t about figuring out if Brandon was guilty, because he’d confessed already and there were a lot of witnesses. Instead, the trial focused on why he did it. How much was Brandon’s background and family life to blame for that day he pulled out a gun and shot Larry twice in the head? Psychologist Ken Corbett tries to figure that out in his book.