The investigation focused on Eric Saibi's emails to uncover potential leads related to the Enron scandal. The emails revealed that Eric was a trader for Enron, and his personal life included shopping habits and a romantic relationship. A job offer from another company was also found, which might indicate that Eric leaked Enron's sensitive information before accepting the new job. Further investigation showed that Eric sent out company information to multiple people and then asked them to delete the previous mail, suggesting he was not loyal to Enron.