When the body of former policewoman Taylor Wright was discovered buried on a remote Pensacola farm, detectives had a lineup of suspects to investigate including her ex-husband, her new girlfriend and her best friend.

The case made national news when the McStay family - Summer, Joe and their two young boys - vanished from their Victorville, California home in 2010 without a trace. False leads poured in, the family car turned up in Mexico. But three years later, when their bodies were found in the California desert, a trace amount of DNA nearby led them to the likely killer.