A Florida man allegedly told police he stabbed and shot his own mother under the direction of a higher power. Derek Vaughn is alleged to have killed his mom, Jerry Lea Vaughn, on the evening of Monday, April 6. Derek, his wife, and his two sons had moved in with Jerry Lea, her Wildwood neighbors told local news outlets. Jerry Lea, 77, called 911 that night around 8:30 p.m. and told dispatchers she was being attacked. "Help me, help me," she cried out, "my son just stabbed me, he is coming to kill me." When stabbing her failed to kill her, Derek, 51, went for his gun, police said.