The prosecution also plans to call locksmith Robert Akin Jr. to testify today. Witnesses testified during a pretrial hearing that Savio, fearful of Peterson, always kept her front door and screen door locked when she was gone or inside her home. But Akin testified at a hearing in 2010 that only the front doorknob -- one of at least three locks on the two doors -- was locked when he was called to her home the night Savio’s body was discovered.