clockwise rotation circular movement on the "h" which we saw is the characteristics replicated in harry's own name. >> investigators went to the chemonics company and showed the sales clerk a photo lineup. the clerk identified lewis harry as the man who purchased the cyanide. in lewis harry's office investigators found an open box of envelopes. when they look athe ones left in the box, they found that three of them had the same defect as the one with the threatening letter. >> in fact, it was a progressive and linear defect, meaning that you could see the progression, how the defect had enlarged as the envelopes moved down the manufacturing line. normally the people in post production and quality control would have culled those out rather than put them into the box. >> i was actually amazed something like that would occur.