A seemingly perfect world held an even more unlikely killer... Julie Keown had a great job, financial security, and a perfect husband who was attending Harvard Business School. But after Julie suddenly died, and doctors discovered she's been poisoned with the main ingredient in antifreeze, her parents began to suspect that her husband, James, was not so perfect. This blow-by-blow account shows how investigators and state police unraveled James Keown's chilling web of deceit.