paper basket they had a label from a chemical company. >> the label had a warning about the use of cyanide. >> but it was signed by somebody who identified himself as charles holly. he told them he needed it for a college class. the forensic examiner, bill flynn was asked to compare it. >> it is is an ovate round letter in harry. there is a very distinctive style that he used from the letter h to the next ovate letter. >> both ended with a y, and flynn discovered they were virtually identical as were the h's at the beginning of each name. >> for instance, the right side of the h in holly is made with that right curving clockwise movement circle on the h. which we saw was replicated in harry's own name. >> the investigators showed a photo lineup. the clerk identified lewis harry as the man who purchased the cyanide. in lewis harry's office