Sean Grayson, the former Illinois sheriff's deputy accused of killing Sonya Massey, testified at his trial Monday, telling the jury he thought Massey was going to throw a pot of boiling water at him. Investigators say Grayson shot and killed Massey in her home after she called 911 about a possible prowler. Grayson has pleaded not guilty. Warning, the video in this story is disturbing.
