In July 2011, billionaire Jonah Shacknai's Coronado, California, mansion was the setting for two horrifying deaths only days apart--his young son's plunge from a balcony and his girlfriend's ghastly hanging. What really happened? Baffling questions remain unanswered. Rule looks at the closed cases through the eyes of a relentless crime reporter. The second probe began in Utah when Susan Powell vanished in a 2009 blizzard. Her controlling husband,...

"Generally naive about their world, children are thought to be nearly incapable of serious wrongdoing and are rarely suspects in violent crimes. Yet, from the 1960s to the mid-90s, the U.S. saw several waves of juvenile murders that caused widespread public concern. The phenomenon created longstanding debates about the sources or causes of a child killer's mindset. Some blame external triggers like video games, rock music or pornography, while others...