>>> tim scoggin was the prime suspect in the murders of cordelia and catherine norton. gie nobles and the attempted murder of leita nobles. >> mr. scoggin had no criminal record. he certainly didn't appear like any kind of tv crook, in fact, he was the proverbial wolf in sheep's clothing. he appeared to be completely nonthreatening. and a loving friend to all his victims. >> investigators found arsenic in some and the acids in leita's home but couldn't find out where it came from. until the owner of a local supermarket called to offer some information. he said when he saw scoggin's picture in the newspaper, he remembered selling him a large amount of rat poison. he even remembered the brand. cowley's original rat and mouse poison. >> he remembered mr. scoggins coming in looking for some sort of poison to kill varmints of some kind. >> i think he didn't buy it that day but he came back several days later and bought more than one bottle. i don't recall how many. >> forensic document examiners analyzes the cremation request orders signed by the norton sisters and a $30,000