Jennifer and Bart Corbin had a seemingly perfect life. Bart's successful dental practice afforded the couple a beautiful home in the Atlanta suburbs where they raised their two little boys. But one December morning in 2004, seven-year-old Dalton Corbin woke up to a living nightmare. He ran to his neighbor's house in his pajamas and told them his mother was dead. Correspondent Peter Van Sant examines how a suburban mom suffered a fatal gunshot wound to the head and investigates her husband, a man who may have had something deadly to hide from his apparent charmed past. Van Sant also speaks exclusively to Jennifer's online lover - a person concealing a double identity.

Christie Wilson was a beautiful 27-year-old woman beloved by her family and friends. One October night in 2005, she spent six hours in a California casino gambling at the blackjack tables with a man she'd just met. Wilson left the casino that night with him and was never seen again. But the casino itself is outfitted with 700 cameras capturing movements of gamblers everywhere. Correspondent Erin Moriarty follows the story and examines the never publicly seen before videotape that may identify a killer.