kerosene heater with gasoline, causing the explosion. jean frantically tried to put it out, and when she couldn't, she ran to call for help. at some point, jim struck his head on the workbench, which fractured his skull and caused his death. the defense offered no explanation for why jean locked the door on her way out of the house, except that it was force of habit, something she did every time she left the house. jean long, herself, took the stand in her own defense. >> she came across as completely genuine, terrified about the prospect of what she was going through and terrified at reliving the moment of what happened that night. >> the jury didn't hear about the results of the polygraph test. >> polygraph examinations are