CNN Forensic Files April 19, 2015 05:50:00
It was probably one in a million that this would have happened. >> this proved that lewis harry sent himself at least one of the threatening letters, perhaps more. and on the shelf in his office scientists found trace amounts of cyanide. but how did lewis harry gain access to his wife's office building to poison the water? >> a key card system is used to gain access on weekends. you have to use the card to scan in to get into the door. >> the office security system revealed someone entered the transamerica office on the weekend before the poisoning. >> the card that was used was diane harry's,...