Brenda and Steve sat their daughter down for a serious talk, desperate to understand what was going on. That's when Sydney's two stories collided. One for her friends and another for her family. Her grades weren't the issue. The lies were. And detectives would later believe that when Brenda confronted her about being expelled, Sydney snapped. In a sudden burst of rage, she grabbed an iron skillet and struck her mother. Then stabbed her more than 30 times in the neck with a kitchen knife. Moments later, she picked up the phone, pretended to be Brenda, and staged a fake break-in hoping to cover up what she'd done.